Document And Entity Information - shares	9 Months Ended
Document And Entity Information - shares	Dec. 31, 2017	Feb. 13, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Entity Registrant Name	Constellation Alpha Capital Corp.
Entity Central Index Key	0001651944
Current Fiscal Year End Date	--03-31
Entity Filer Category	Non-accelerated Filer
Trading Symbol	CNACU
Entity Common Stock, Shares Outstanding		18,530,000

CONDENSED BALANCE SHEETS - USD ($)	Dec. 31, 2017	Mar. 31, 2017
Current Assets
Cash	$ 554,273	$ 25,000
Prepaid expenses	67,083	0
Total Current Assets	621,356	25,000
Deferred offering costs	0	169,742
Cash and marketable securities held in Trust Account	145,878,435	0
Total Assets	146,499,791	194,742
Current liabilities
Accounts payable and accrued expenses	27,014	4,498
Advances from related parties	11,095	168,037
Total Current Liabilities	38,109	172,535
Deferred underwriting fees	5,031,250	0
Total Liabilities	5,069,359	172,535
Commitments
Ordinary shares subject to possible redemption, 13,443,938 and -0- shares at redemption value as of December 31, 2017 and March 31, 2017, respectively	136,430,431	0
Shareholders’ Equity
Preferred shares, no par value; unlimited shares authorized; none issued and outstanding	0	0
Ordinary shares, no par value; unlimited shares authorized; 5,086,062 and 4,312,500 shares issued and outstanding (excluding 13,443,938 and -0- shares subject to possible redemption) as of December 31, 2017 and March 31, 2017, respectively	4,536,352	25,000
Retained earnings/(Accumulated deficit)	463,649	(2,793)
Total Shareholders’ Equity	5,000,001	22,207
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 146,499,791	$ 194,742

CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2017	Mar. 31, 2017
Preferred Stock, Par or Stated Value Per Share	$ 0	$ 0
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par or Stated Value Per Share	$ 0	$ 0
Common Stock, Shares, Issued	5,086,062	4,312,500
Common Stock, Shares, Outstanding	5,078,655	4,312,500
Temporary Equity, Shares Outstanding	13,443,938	0

CONDENSED STATEMENTS OF OPERATIONS - USD ($)

3 Months Ended

9 Months Ended

Dec. 31, 2017

Dec. 31, 2016

Dec. 31, 2017

Dec. 31, 2016

Operating costs

$ 97,330

$ 0

$ 224,493

$ 60

Loss from operations

(97,330)

(224,493)

(60)

Other income (loss):

Interest income

360,898

726,784

Unrealized loss on marketable securities held in Trust Account

(11,862)

(35,849)

Net income (loss)

$ 251,706

$ 0

$ 466,442

$ (60)

Weighted average shares outstanding, basic and diluted (in shares)

^[1]

5,078,655

3,750,000

4,601,770

3,750,000

Basic and diluted net loss per ordinary share (in dollars per share)

$ (0.01)

$ 0.00

$ (0.04)

$ (0.00)

[1]	Excludes an aggregate of up to 13,443,938 shares subject to redemption at December 31, 2017 and an aggregate of 562,500 shares held by the sponsor that were subject to forfeiture at December 31, 2016 to the extent that the underwriters’ over-allotment was not exercised in full.

CONDENSED STATEMENTS OF OPERATIONS (Parenthetical) - shares	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Temporary Equity, Shares Outstanding	13,443,938	0
Sponsor [Member]
Temporary Equity, Shares Subject To Forfeiture			562,500

CONDENSED STATEMENT OF CHANGES IN SHAREHOLDERS’ EQUITY - 9 months ended Dec. 31, 2017 - USD ($)	Total	Common Stock [Member]	Retained Earnings [Member]
Balance at Mar. 31, 2017	$ 22,207	$ 25,000	$ (2,793)
Balance (in Shares) at Mar. 31, 2017		4,312,500
Cancellation of ordinary shares issued to initial shareholders	0	$ 0	0
Cancellation of ordinary shares issued to initial shareholders (in shares)		(718,750)
Sale of 14,375,000 Units, net of underwriters discount and offering expenses	135,329,283	$ 135,329,283	0
Sale of 14,375,000 Units, net of underwriters discount and offering expenses (in shares)		14,375,000
Sale of 561,250 Private Units	5,612,500	$ 5,612,500	0
Sale of 561,250 Private Units (in shares)		561,250
Ordinary shares subject to redemption	(136,430,431)	$ (136,430,431)	0
Ordinary shares subject to redemption (in shares)		(13,443,938)
Net income	466,442	$ 0	466,442
Balance at Dec. 31, 2017	$ 5,000,001	$ 4,536,352	$ 463,649
Balance (in Shares) at Dec. 31, 2017		5,086,062

CONDENSED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
CONDENSED STATEMENTS OF CASH FLOWS - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Cash Flows from Operating Activities:
Net income (loss)	$ 466,442	$ (60)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Interest earned on marketable securities held in Trust Account	(726,784)	0
Unrealized loss on securities held in Trust Account	35,849	0
Changes in operating assets and liabilities:
Prepaid expenses	(67,083)	0
Accounts payable and accrued expenses	22,516	2,254
Net cash (used in) provided by operating activities	(269,060)	2,194
Cash Flows from Investing Activities:
Investment of cash in Trust Account	(145,187,500)	0
Net cash used in investing activities	(145,187,500)	0
Cash Flows from Financing Activities:
Proceeds from sale of Units, net of underwriting discounts paid	140,875,000	0
Proceeds from sale of Private Units	5,612,500	0
Advances received from related party	162,255	0
Repayment of advances from related party	(319,197)	(14,631)
Payment of offering costs	(344,725)	(4,004)
Net cash provided by (used in) financing activities	145,985,833	(18,635)
Net Change in Cash	529,273	(16,441)
Cash - Beginning	25,000	16,441
Cash - Ending	554,273	0
Non-Cash investing and financing activities:
Offering costs charge to additional paid in capital	301,278	0
Deferred underwriting fee payable	5,031,250	0
Initial classification of ordinary shares subject to possible redemption	135,963,594	0
Change in value of ordinary shares subject to possible redemption	$ 466,837	$ 0

DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS

9 Months Ended

Dec. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]

1. DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS

Constellation Alpha Capital Corp. (the “Company”) is a blank check company incorporated in the British Virgin Islands on July 31, 2015. The Company was formed for the purpose of acquiring, engaging in a share exchange, share reconstruction and amalgamation with, purchasing all or substantially all of the assets of, entering into contractual arrangements with, or engaging in any other similar business combination with one or more businesses or entities (“Business Combination”). Although the Company is not limited to a particular industry or geographic region for purposes of consummating a Business Combination, the Company intends to focus on healthcare services and manufacturing businesses in India.

All activity through December 31, 2017 relates to the Company’s formation, its initial public offering (“Initial Public Offering”), which is described below, and identifying a target company for a Business Combination.

The registration statement for the Company’s Initial Public Offering was declared effective by the Securities and Exchange Commission (the “SEC”) on June 19, 2017. On June 23, 2017, the Company consummated the Initial Public Offering of 14,375,000 units (“Units” and, with respect to the ordinary shares included in the Units, the “Public Shares”) at $10.00 per Unit, which includes a full exercise by the underwriters of their over-allotment option in the amount of 1,875,000 Units, generating gross proceeds of $143,750,000, which is described in Note 3. Each Unit consists of one Public Share, one right (“Public Right”) and one redeemable warrant (“Public Warrant”). Each Public Right will convert into one-tenth (1/10) of one ordinary share (see Note 7). Each Public Warrant entitles the holder to purchase one-half (½) of one ordinary share at an exercise price of $11.50 per whole share (see Note 7). The Company will not issue fractional shares.

Simultaneously with the closing of the Initial Public Offering, the Company consummated the sale of 561,250 Units (the “Private Units”) at a price of $10.00 per Unit in a private placement to the Company’s sponsor, Centripetal, LLC (the “Sponsor”), and Cowen Investments, LLC (and their designees) (“Cowen Investments”), generating gross proceeds of $5,612,500, which is described in Note 4. The Private Units are identical to the Units sold in the Initial Public Offering, except for the private warrants (“Private Warrants”), as described in Note 7.

Following the closing of the Initial Public Offering on June 23, 2017, an amount of $145,187,500 ($10.10 per Unit) from the net proceeds of the sale of the Units in the Initial Public Offering and the Private Units was placed in a trust account (“Trust Account”) and invested in U.S. government securities, within the meaning set forth in Section 2(a)(16) of the Investment Company Act of 1940, as amended (the “Investment Company Act”), with a maturity of 180 days or less or in any open-ended investment company that holds itself out as a money market fund selected by the Company meeting the conditions of paragraphs (d)(2), (d)(3) and (d)(4) of Rule 2a-7 of the Investment Company Act, as determined by the Company, until the earlier of: (i) the consummation of a Business Combination or (ii) the distribution of the Trust Account, as described below.

Transaction costs amounted to $8,420,717, consisting of $2,875,000 of underwriting fees, $5,031,250 of deferred underwriting fees (see Note 6) and $514,467 of Initial Public Offering costs. As of December 31, 2017, $554,273 of cash was held outside of the Trust Account and was available for working capital purposes.

The Company’s management has broad discretion with respect to the specific application of the net proceeds of its Initial Public Offering and Private Units, although substantially all of the net proceeds are intended to be applied generally toward consummating a Business Combination. NASDAQ rules provide that the Company’s Business Combination must be with one or more target businesses that together have a fair market value equal to at least 80% of the balance in the Trust Account (excluding any deferred underwriting commissions and taxes payable on interest earned on the Trust Account) at the time of the signing a definitive agreement in connection with a Business Combination. However, the Company will only complete a Business Combination if the post-Business Combination company owns or acquires 50% or more of the outstanding voting securities of the target or otherwise acquires a controlling interest in the target sufficient for it not to be required to register as an investment company under the Investment Company Act. There is no assurance that the Company will be able to successfully effect a Business Combination.

The Company will provide its shareholders with the opportunity to redeem all or a portion of their Public Shares upon the completion of a Business Combination either (i) in connection with a shareholder meeting called to approve the Business Combination or (ii) by means of a tender offer. In connection with a proposed Business Combination, the Company may seek shareholder approval of a Business Combination at a meeting called for such purpose at which shareholders may seek to redeem their shares, regardless of whether they vote for or against a Business Combination. The shareholders will be entitled to redeem their shares for a pro rata portion of the amount then in the Trust Account ($10.10 per share, plus any pro rata interest earned on the funds held in the Trust Account and not previously released to the Company to pay its tax obligations). The per-share amount to be distributed to shareholders who redeem their shares will not be reduced by the deferred underwriting commissions the Company will pay to the underwriters (as discussed in Note 7). The Company will proceed with a Business Combination if the Company has net tangible assets of at least $5,000,001 upon such consummation of a Business Combination and, if the Company seeks shareholder approval, a majority of the outstanding shares voted are voted in favor of the Business Combination. Notwithstanding the foregoing, a public shareholder, together with any affiliate of such shareholder or any other person with whom such shareholder is acting in concert or as a “group” (as defined under Section 13 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), will be restricted from seeking redemption rights with respect to 20% or more of the ordinary shares sold in the Initial Public Offering without the Company’s prior written consent. If a shareholder vote is not required and the Company does not decide to hold a shareholder vote for business or other legal reasons, the Company will, pursuant to its Memorandum and Articles of Association, offer such redemption pursuant to the tender offer rules of the SEC, and file tender offer documents containing substantially the same information as would be included in a proxy statement with the SEC prior to completing a Business Combination.

The Sponsor and Cowen Investments (the “Initial Shareholders”) have agreed (a) to vote their founder shares, the ordinary shares included in the Private Units (the “Private Shares”) and any Public Shares purchased during or after the Initial Public Offering in favor of a Business Combination, (b) not to propose an amendment to the Company’s Memorandum and Articles of Association with respect to the Company’s pre-Business Combination activities prior to the consummation of a Business Combination unless the Company provides dissenting public shareholders with the opportunity to redeem their Public Shares in conjunction with any such amendment, (c) not to redeem any shares (including the founder shares and Private Shares) into the right to receive cash from the Trust Account in connection with a shareholder vote to approve a Business Combination (or to sell any shares in a tender offer in connection with a Business Combination if the Company does not seek shareholder approval in connection therewith) or a vote to amend the provisions of the Memorandum and Articles of Association relating to shareholders’ rights of pre-Business Combination activity; and (d) that the founder shares and securities underlying the Private Units shall not participate in any liquidating distributions upon winding up if a Business Combination is not consummated. However, the Initial Shareholders will be entitled to liquidating distributions from the Trust Account with respect to Public Shares they hold if the Company fails to complete its Business Combination.

If the Company is unable to complete a Business Combination within 18 months from the closing of the Initial Public Offering (or 21 months from the closing of the Initial Public Offering if the Company has an executed letter of intent, agreement in principle or definitive agreement for a Business Combination within 18 months from the closing of the Initial Public Offering but has not completed the Business Combination within such 18 month period) (the “Combination Period”), the Company will (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but no more than five business days thereafter, redeem 100% of the outstanding Public Shares, at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest earned (net of taxes payable and less interest to pay dissolution expenses up to $50,000), divided by the number of then outstanding Public Shares, which redemption will completely extinguish public shareholders’ rights as shareholders (including the right to receive further liquidation distributions, if any), subject to applicable law, and (iii) as promptly as reasonably possible following such redemption, subject to the approval of the remaining shareholders and the Company’s board of directors, proceed to commence a voluntary liquidation and thereby a formal dissolution of the Company, subject in each case to its obligations to provide for claims of creditors and the requirements of applicable law. The underwriters have agreed to waive their rights to the deferred underwriting commission held in the Trust Account in the event the Company does not complete a Business Combination within the Combination Period and, in such event, such amounts will be included with the funds held in the Trust Account that will be available to fund the redemption of the Company’s Public Shares. In the event of such distribution, it is possible that the per share value of the assets remaining available for distribution (including Trust Account assets) will be less than $10.10 per Unit. The Sponsor has agreed that it will indemnify the Company to the extent necessary to ensure that the proceeds in the Trust Account are not reduced by the claims of target businesses or claims of vendors or other entities that are owed money by the Company for services rendered or contracted for or products sold to the Company, but only if such a vendor or prospective target business does not execute such a waiver. However, the Sponsor may not be able to meet such obligation as the Company has not required its Sponsor to retain any assets to provide for its indemnification obligations, nor has the Company taken any further steps to ensure that the Sponsor will be able to satisfy any indemnification obligations that arise. Moreover, the Sponsor will not be liable to the Company’s public shareholders if it should fail to satisfy its obligations and instead will only be liable to the Company. The Company will seek to reduce the possibility that the Sponsor will have to indemnify the Trust Account due to claims of creditors by endeavoring to have all vendors, service providers, prospective target businesses or other entities with which the Company does business, execute agreements with the Company waiving any right, title, interest or claim of any kind in or to monies held in the Trust Account.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

9 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Significant Accounting Policies [Text Block]

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of presentation

The accompanying unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X of the SEC. Certain information or footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted, pursuant to the rules and regulations of the SEC for interim financial reporting. Accordingly, they do not include all the information and footnotes necessary for a comprehensive presentation of financial position, results of operations, or cash flows. In the opinion of management, the accompanying unaudited condensed financial statements include all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented.

The accompanying unaudited condensed financial statements should be read in conjunction with the Company's Prospectus as filed with the SEC on June 21, 2017, as well as the Company’s Current Report on Form 8-K, as filed with the SEC on June 29, 2017. The interim results for the three and nine months ended December 31, 2017 are not necessarily indicative of the results to be expected for the year ending March 31, 2018 or for any future interim periods.

Emerging growth company

The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act of 1933, as amended (the “Securities Act”), as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), and it may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act, reduced disclosure obligations regarding executive compensation in its periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and shareholder approval of any golden parachute payments not previously approved.

Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company which is neither an emerging growth company nor an emerging growth company which has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used.

Use of estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.

Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from our estimates.

Cash and cash equivalents

The Company considers all short-term investments with an original maturity of three months or less when purchased to be cash equivalents. The Company did not have any cash equivalents as of December 31, 2017 and March 31, 2017.

Cash and marketable securities held in Trust Account

At December 31, 2017, the assets held in the Trust Account were held in cash and U.S. Treasury Bills.

Ordinary shares subject to possible redemption

The Company accounts for its ordinary shares subject to possible redemption in accordance with the guidance in Accounting Standards Codification (“ASC”) Topic 480 “Distinguishing Liabilities from Equity.” Ordinary shares subject to mandatory redemption (if any) are classified as a liability instrument and are measured at fair value. Conditionally redeemable ordinary shares (including ordinary shares that feature redemption rights that are either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the Company’s control) are classified as temporary equity. At all other times, ordinary shares are classified as shareholders’ equity. The Company’s ordinary shares feature certain redemption rights that are considered to be outside of the Company’s control and subject to occurrence of uncertain future events. Accordingly, at December 31, 2017, ordinary shares subject to possible redemption are presented as temporary equity, outside of the shareholders’ equity section of the Company’s balance sheet.

Offering costs

Offering costs consist of legal, accounting, underwriting fees and other costs incurred through the balance sheet date that are directly related to the Initial Public Offering. Offering costs amounting to $8,420,717 were charged to shareholders’ equity upon the completion of the Initial Public Offering.

Income taxes

The Company complies with the accounting and reporting requirements of ASC Topic 740, “Income Taxes,” which requires an asset and liability approach to financial accounting and reporting for income taxes. Deferred income tax assets and liabilities are computed for differences between the financial statement and tax bases of assets and liabilities that will result in future taxable or deductible amounts, based on enacted tax laws and rates applicable to the periods in which the differences are expected to affect taxable income. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount expected to be realized.

ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more-likely-than-not to be sustained upon examination by taxing authorities. The Company’s management determined that the British Virgin Islands is the Company’s only major tax jurisdiction. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as income tax expense. As of December 31, 2017 and March 31, 2017, there were no unrecognized tax benefits and no amounts accrued for interest and penalties. The Company is currently not aware of any issues under review that could result in significant payments, accruals or material deviation from its position.

The Company may be subject to potential examination by U.S. federal, U.S. states or foreign taxing authorities in the areas of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income among various tax jurisdictions and compliance with U.S. federal, U.S. state and foreign tax laws. The Company’s management does not expect that the total amount of unrecognized tax benefits will materially change over the next twelve months.

The Company’s tax provision is zero because the Company is organized in the British Virgin Islands with no connection to any other taxable jurisdiction. As such, the Company has no deferred tax assets. The Company is considered to be an exempted British Virgin Islands Company, and is presently not subject to income taxes or income tax filing requirements in the British Virgin Islands or the United States.

Net loss per ordinary share

The Company complies with accounting and disclosure requirements of ASC Topic 260, “Earnings Per Share.” Net loss per ordinary share is computed by dividing net loss by the weighted average number of ordinary shares outstanding for the period. The Company applies the two-class method in calculating earnings per share. Weighted average shares as of September 30, 2016 were reduced for the effect of an aggregate of 562,500 ordinary shares that are subject to forfeiture if the over-allotment option was not exercised by the underwriters (see Note 7). Ordinary shares subject to possible redemption at December 31, 2017, which are not currently redeemable and are not redeemable at fair value, have been excluded from the calculation of basic loss per share since such shares, if redeemed, only participate in their pro rata share of the Trust Account earnings. The Company has not considered the effect of (1) warrants sold in the Initial Public Offering and private placement to purchase 7,468,125 ordinary shares, and (2) rights sold in the Initial Public Offering and private placement that convert into 1,493,625 ordinary shares, in the calculation of diluted loss per share, since the exercise of the warrants and the conversion of rights into ordinary shares is contingent upon the occurrence of future events. As a result, diluted loss per share is the same as basic loss per share for the periods.

Reconciliation of net loss per ordinary share

The Company’s net income is adjusted for the portion of income that is attributable to ordinary shares subject to redemption, as these shares only participate in the income of the Trust Account and not the losses of the Company. Accordingly, basic and diluted loss per ordinary share is calculated as follows:

	Three Months Ended December 31,		Nine Months Ended December 31,
	2017		2017
Net income	$	251,706	$	466,442
Less: Income attributable to ordinary shares subject to redemption		(326,418)		(646,162)
Adjusted net loss	$	(74,712)	$	(179,720)

Weighted average shares outstanding, basic and diluted		5,078,655		4,601,770

Basic and diluted net loss per ordinary share	$	(0.01)	$	(0.04)

Concentration of credit risk

Financial instruments that potentially subject the Company to concentration of credit risk consist of cash accounts in a financial institution which, at times may exceed the Federal depository insurance coverage of $250,000. The Company had not experienced losses on this account and management believes the Company is not exposed to significant risks on such account.

Fair value of financial instruments

The fair value of the Company’s assets and liabilities, which qualify as financial instruments under ASC Topic 820, “Fair Value Measurements and Disclosures,” approximates the carrying amounts represented in the accompanying balance sheets, primarily due to their short-term nature.

Recently issued accounting standards

Management does not believe that any recently issued, but not yet effective, accounting pronouncements, if currently adopted, would have a material effect on the Company’s consolidated financial statements.

INITIAL PUBLIC OFFERING

9 Months Ended

Dec. 31, 2017

Equity [Abstract]

Initial Public Offering Disclosure [Text Block]

3. INITIAL PUBLIC OFFERING

Pursuant to the Initial Public Offering, the Company sold 14,375,000 Units at a purchase price of $10.00 per Unit, which includes the full exercise by the underwriters of their over-allotment option in the amount of 1,875,000 Units at $10.00 per Unit. Each Unit consists of one ordinary share, one Public Right and one Public Warrant. Each Public Right will convert into one-tenth (1/10) of one ordinary share (see Note 7). Each Public Warrant entitles the holder to purchase one-half (½) of one ordinary share at an exercise price of $11.50 per whole share (see Note 7). The Company will not issue fractional shares.

PRIVATE PLACEMENT

9 Months Ended

Dec. 31, 2017

Equity [Abstract]

Private Placement Disclosure [Text Block]

4. PRIVATE PLACEMENT

Simultaneously with the Initial Public Offering, the Sponsor and Cowen Investments purchased an aggregate of 561,250 Private Units for an aggregate purchase price of $5,612,500, of which 425,000 Private Units were purchased by the Sponsor and 136,250 Private Units were purchased by Cowen Investments. The proceeds from the Private Units were added to the net proceeds from the Initial Public Offering held in the Trust Account.

The Private Units are identical to the Units sold in the Initial Public Offering, except for the Private Warrants, as described in Note 7. The holders have agreed not to transfer, assign or sell any of the Private Units or underlying securities (except to certain permitted transferees and provided the transferees agree to the same terms and restrictions as the permitted transferees of the founder shares must agree to) until after the completion of a Business Combination.

RELATED PARTY TRANSACTIONS

9 Months Ended

Dec. 31, 2017

5. RELATED PARTY TRANSACTIONS

Founder Shares

On August 31, 2015, the Company issued an aggregate of 1,437,500 founder shares to its initial shareholders for an aggregate purchase price of $25,000 in cash, or approximately $0.017 per share. On September 17, 2015, the Company effectuated a 2-for-1 sub-division of its ordinary shares resulting in an aggregate of 2,875,000 founder shares outstanding and held by the initial shareholders. On March 29, 2017, the Company effectuated a 1.5-for-1 sub-division of its ordinary shares resulting in an aggregate of 4,312,500 founder shares outstanding and held by the initial shareholders. On May 17, 2017, the Sponsor surrendered and returned to the Company, for nil consideration, an aggregate of 718,750 founder shares, which were cancelled, leaving an aggregate of 3,593,750 founder shares outstanding. In connection with the Initial Public Offering, the Sponsor forfeited 136,250 founder shares, which such shares were cancelled and simultaneously issued to Cowen Investments for no additional consideration (see Note 6).

The 3,593,750 founder shares included an aggregate of up to 468,750 shares subject to forfeiture by the Sponsor to the extent that the underwriters’ over-allotment was not exercised in full or in part, so that the initial shareholders would collectively own 20% of the Company’s issued and outstanding shares after the Initial Public Offering (excluding the sale of the Private Units). As a result of the underwriters’ election to exercise their over-allotment option in full, 468,750 founder shares are no longer subject to forfeiture.

The initial shareholders have agreed not to transfer, assign or sell any of the founder shares (except to certain permitted transferees) until, with respect to 50% of the founder shares, the earlier of (i) one year after the date of the consummation of a Business Combination, or (ii) the date on which the closing price of the Company’s ordinary shares equals or exceeds $12.50 per share (as such amount may be adjusted) for any 20 trading days within any 30-trading day period commencing after a Business Combination, with respect to the remaining 50% of the founder shares, upon one year after the date of the consummation of a Business Combination, or earlier, in each case, if, subsequent to a Business Combination, the Company consummates a subsequent liquidation, merger, stock exchange or other similar transaction which results in all of the Company’s shareholders having the right to exchange their ordinary shares for cash, securities or other property.

Related Party Advances

Through December 31, 2017, the Company has received an aggregate of $347,635 in advances, of which $162,255 was received during the nine months ended December 31, 2017 from the Company’s Chairman and Chief Executive Officer and the Company’s Chief Financial Officer to be used for the payment of costs related to the Initial Public Offering and for working capital purposes. The advances are non-interest bearing, unsecured and due on demand. During the nine months ended December 31, 2017, the Company has repaid $319,197 of such advances. Advances amounting to $11,095 and $168,037 were outstanding as of December 31, 2017 and March 31, 2017, respectively.

Administrative Services Arrangement

The Company entered into an agreement whereby, commencing on June 20, 2017 through the earlier of the Company’s consummation of a Business Combination and its liquidation, the Company pays the Sponsor a monthly fee of $10,000 for office space, utilities and administrative services. For the three and nine months ended December 31, 2017, the Company incurred $30,000 and $60,000, respectively, in fees for these services.

Related Party Loans

In order to finance transaction costs in connection with a Business Combination, the Sponsor or an affiliate of the Sponsor, or the Company’s officers and directors may, but are not obligated to, loan the Company funds as may be required (“Working Capital Loans”). Such Working Capital Loans would be evidenced by promissory notes. The notes would either be repaid upon consummation of a Business Combination, without interest, or, at the lender’s discretion, up to $1,500,000 of notes may be converted upon consummation of a Business Combination into additional Private Units at a price of $10.00 per Unit. In the event that a Business Combination does not close, the Company may use a portion of proceeds held outside the Trust Account to repay the Working Capital Loans but no proceeds held in the Trust Account would be used to repay the Working Capital Loans.

COMMITMENTS AND CONTINGENCIES

9 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

6. COMMITMENTS AND CONTINGENCIES

Registration Rights

Pursuant to a registration rights agreement entered into on June 19, 2017, the holders of the founder shares, Private Units and any Units that may be issued upon conversion of the Working Capital Loans (and underlying securities) are entitled to registration rights. The holders of 25% of these securities are entitled to make up to three demands, excluding short form demands, that the Company register such securities. In addition, the holders have certain “piggy-back” registration rights with respect to registration statements filed subsequent to the consummation of a Business Combination. However, the registration rights agreement provides that the Company will not permit any registration statement filed under the Securities Act to become effective until termination of the applicable lock-up period. The Company will bear the expenses incurred in connection with the filing of any such registration statements.

Underwriting Agreement

The underwriters were paid cash underwriting discount of $2,875,000. In addition, the underwriters are entitled to a deferred fee of three and one-half percent (3.5%) of the gross proceeds of the Initial Public Offering, or $5,031,250 in the aggregate. Of such amount, up to approximately 0.5% per Unit, or $718,750, may be paid to third parties not participating in the Initial Public Offering that assist the Company in consummating its Business Combination. The election to make such payments to third parties will be solely at the discretion of the Company, and such third parties will be selected by the Company in its sole and absolute discretion. The deferred fee will be paid in cash upon the closing of a Business Combination from the amounts held in the Trust Account, subject to the terms of the underwriting agreement.

SHAREHOLDERS' EQUITY

9 Months Ended

Dec. 31, 2017

Stockholders' Equity Note [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

7. SHAREHOLDERS’ EQUITY

Preferred Shares — The Company is authorized to issue an unlimited number of no par value preferred shares, divided into five classes, Class A through Class E, each with such designation, rights and preferences as may be determined by a resolution of the Company’s board of directors to amend the Memorandum and Articles of Association to create such designations, rights and preferences. The Company has five classes of preferred shares to give the Company flexibility as to the terms on which each Class is issued. All shares of a single class must be issued with the same rights and obligations. Accordingly, starting with five classes of preferred shares will allow the Company to issue shares at different times on different terms. At December 31, 2017 and March 31, 2017, there are no preferred shares designated, issued or outstanding.

Ordinary Shares — The Company is authorized to issue an unlimited number of no par value ordinary shares. Holders of the Company’s ordinary shares are entitled to one vote for each share. At December 31, 2017, there were 5,086,062 ordinary shares issued and outstanding (excluding 13,443,938 ordinary shares subject to possible redemption). At March 31, 2017, there were 4,312,500 ordinary shares issued and outstanding, of which 562,500 were subject to forfeiture to the extent that the underwriters’ over-allotment option was not exercised in full.

The Sponsor forfeited 136,250 founder shares, which such shares were cancelled and simultaneously issued to Cowen Investments for no additional consideration (the “Cowen Shares”). The issuance of the Cowen Shares occurred simultaneously with the consummation of the Initial Public Offering. The Company accounted for the Cowen Shares as an expense of the Initial Public Offering resulting in a charge directly to shareholders’ equity. The Company estimated the fair value of the Cowen Shares to be $1,362,500 based upon the offering price of the Units of $10.00 per Unit. Cowen Investments has agreed not to transfer, assign or sell any of the Cowen Shares (except to certain permitted transferees) until, with respect to 50% of the Cowen Shares, the earlier of (i) one year after the date of the consummation of a Business Combination, or (ii) the date on which the closing price of the Company’s ordinary shares equals or exceeds $12.50 per share for any 20 trading days within any 30- trading day period commencing after a Business Combination, and with respect to the remaining 50% of the Cowen Shares, upon one year after the date of the consummation of a Business Combination, or earlier, in each case, if, subsequent to a Business Combination, the Company consummates a subsequent liquidation, merger, stock exchange or other similar transaction which results in all of the Company’s shareholders having the right to exchange their ordinary shares for cash, securities or other property. In addition, Cowen Investments has agreed (i) to waive its redemption rights with respect to such shares in connection with the completion of a Business Combination and (ii) to waive its rights to liquidating distributions from the Trust Account with respect to such shares if the Company fails to complete a Business Combination within the Combination Period.

The Cowen Shares have been deemed compensation by FINRA and are therefore subject to a lock-up for a period of 180 days pursuant to Rule 5110(g)(1) of FINRA’s NASD Conduct Rules. Pursuant to FINRA Rule 5110(g)(1), these securities will not be the subject of any hedging, short sale, derivative, put or call transaction that would result in the economic disposition of the securities by any person for a period of 180 days immediately following the date of the Initial Public Offering, nor may they be sold, transferred, assigned, pledged or hypothecated for a period of 180 days immediately following the Initial Public Offering except to any underwriter and selected dealer participating in the Initial Public Offering and their bona fide officers or partners.

Rights — Each holder of a right will receive one-tenth (1/10) of one ordinary share upon consummation of a Business Combination, even if the holder of such right redeemed all shares held by it in connection with a Business Combination. No fractional shares will be issued upon exchange of the rights. No additional consideration will be required to be paid by a holder of rights in order to receive its additional shares upon consummation of a Business Combination as the consideration related thereto has been included in the Unit purchase price paid for by investors in the Initial Public Offering. If the Company enters into a definitive agreement for a Business Combination in which the Company will not be the surviving entity, the definitive agreement will provide for the holders of rights to receive the same per share consideration the holders of the ordinary shares will receive in the transaction on an as-converted into ordinary share basis and each holder of a right will be required to affirmatively convert its rights in order to receive 1/10 share underlying each right (without paying additional consideration). The shares issuable upon exchange of the rights will be freely tradable (except to the extent held by affiliates of the Company).

If the Company is unable to complete a Business Combination within the Combination Period and the Company liquidates the funds held in the Trust Account, holders of rights will not receive any of such funds with respect to their rights, nor will they receive any distribution from the Company’s assets held outside of the Trust Account with respect to such rights, and the rights will expire worthless. Further, there are no contractual penalties for failure to deliver securities to the holders of the rights upon consummation of a Business Combination. Additionally, in no event will the Company be required to net cash settle the rights. Accordingly, the rights may expire worthless.

Warrants — Public Warrants may only be exercised for a whole number of shares. No fractional shares will be issued upon exercise of the Public Warrants. The Public Warrants will become exercisable on the later of (a) the consummation of a Business Combination or (b) 12 months from the effective date of the registration statement relating to the Initial Public Offering. No Public Warrants will be exercisable for cash unless the Company has an effective and current registration statement covering the ordinary shares issuable upon exercise of the Public Warrants and a current prospectus relating to such ordinary shares. Notwithstanding the foregoing, if a registration statement covering the ordinary shares issuable upon the exercise of the Public Warrants is not effective within 90 days from the consummation of a Business Combination, the holders may, until such time as there is an effective registration statement and during any period when the Company shall have failed to maintain an effective registration statement, exercise the Public Warrants on a cashless basis pursuant to an available exemption from registration under the Securities Act. If an exemption from registration is not available, holders will not be able to exercise their Public Warrants on a cashless basis. The Public Warrants will expire five years from the consummation of a Business Combination or earlier upon redemption or liquidation.

The Private Warrants are identical to the Public Warrants underlying the Units sold in the Initial Public Offering, except the Private Warrants are exercisable for cash (even if a registration statement covering the ordinary shares issuable upon exercise of such Private Warrants is not effective) or on a cashless basis, at the holder’s option, and are be redeemable by the Company, in each case so long as they are still held by the Initial Shareholders or their affiliates.

The Company may call the warrants for redemption (excluding the Private Warrants):

	⋅	in whole and not in part;
	⋅	at a price of $.01 per warrant;
	⋅	at any time while the Public Warrants are exercisable;
	⋅	upon not less than 30 days’ prior written notice of redemption to each Public Warrant holder;
	⋅	if, and only if, the reported last sale price of the ordinary shares equals or exceeds $18.00 per share, for any 20 trading days within a 30 trading day period ending on the third trading day prior to the notice of redemption to Public Warrant holders; and
	⋅	if, and only if, there is a current registration statement in effect with respect to the ordinary shares underlying such warrants at the time of redemption and for the entire 30-day trading period referred to above and continuing each day thereafter until the date of redemption.

If the Company calls the Public Warrants for redemption, management will have the option to require all holders that wish to exercise the Public Warrants to do so on a “cashless basis,” as described in the warrant agreement.

The exercise price and number of ordinary shares issuable upon exercise of the warrants may be adjusted in certain circumstances including in the event of a stock dividend, extraordinary dividend or recapitalization, reorganization, merger or consolidation. However, the warrants will not be adjusted for issuances of ordinary shares at a price below its exercise price. Additionally, in no event will the Company be required to net cash settle the warrants. If the Company is unable to complete a Business Combination within the Combination Period and the Company liquidates the funds held in the Trust Account, holders of warrants will not receive any of such funds with respect to their warrants, nor will they receive any distribution from the Company’s assets held outside of the Trust Account with respect to such warrants. Accordingly, the warrants may expire worthless.

FAIR VALUE MEASUREMENTS

9 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Fair Value Disclosures [Text Block]

8. FAIR VALUE MEASUREMENTS

The Company follows the guidance in ASC 820 for its financial assets and liabilities that are re-measured and reported at fair value at each reporting period, and non-financial assets and liabilities that are re-measured and reported at fair value at least annually.

The fair value of the Company’s financial assets and liabilities reflects management’s estimate of amounts that the Company would have received in connection with the sale of the assets or paid in connection with the transfer of the liabilities in an orderly transaction between market participants at the measurement date. In connection with measuring the fair value of its assets and liabilities, the Company seeks to maximize the use of observable inputs (market data obtained from independent sources) and to minimize the use of unobservable inputs (internal assumptions about how market participants would price assets and liabilities). The following fair value hierarchy is used to classify assets and liabilities based on the observable inputs and unobservable inputs used in order to value the assets and liabilities:

	Level 1:	Quoted prices in active markets for identical assets or liabilities. An active market for an asset or liability is a market in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis.

	Level 2:	Observable inputs other than Level 1 inputs. Examples of Level 2 inputs include quoted prices in active markets for similar assets or liabilities and quoted prices for identical assets or liabilities in markets that are not active.

	Level 3:	Unobservable inputs based on our assessment of the assumptions that market participants would use in pricing the asset or liability.

The following table presents information about the Company’s assets that are measured at fair value on a recurring basis at December 31, 2017 and March 31, 2017, and indicates the fair value hierarchy of the valuation inputs the Company utilized to determine such fair value:

Description	Level	December 31, 2017		March 31, 2017
Assets:
Cash and marketable securities held in Trust Account	1	$	145,878,435	$	—

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

SUBSEQUENT EVENTS

9 Months Ended

Dec. 31, 2017

Subsequent Events [Abstract]

Subsequent Events [Text Block]

9. SUBSEQUENT EVENTS

The Company evaluates subsequent events and transactions that occur after the balance sheet date up to the date that the financial statements were issued. Based upon this review, the Company did not identify any subsequent events that would have required adjustment or disclosure in the financial statements.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

9 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Basis of Accounting, Policy [Policy Text Block]

Basis of presentation

Emerging Growth Company, Policy [Policy Text Block]

Emerging growth company

Use of Estimates, Policy [Policy Text Block]

Use of estimates

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and cash equivalents

Marketable Securities, Held-to-maturity Securities, Policy [Policy Text Block]

Cash and marketable securities held in Trust Account

At December 31, 2017, the assets held in the Trust Account were held in cash and U.S. Treasury Bills.

Shares Subject to Mandatory Redemption, Changes in Redemption Value, Policy [Policy Text Block]

Ordinary shares subject to possible redemption

Offering Costs, Policy [Policy Text Block]

Offering costs

Income Tax, Policy [Policy Text Block]

Income taxes

Earnings Per Share, Policy [Policy Text Block]

Net loss per ordinary share

Reconciliation of net loss per ordinary share

	Three Months Ended December 31,		Nine Months Ended December 31,
	2017		2017
Net income	$	251,706	$	466,442
Less: Income attributable to ordinary shares subject to redemption		(326,418)		(646,162)
Adjusted net loss	$	(74,712)	$	(179,720)

Weighted average shares outstanding, basic and diluted		5,078,655		4,601,770

Basic and diluted net loss per ordinary share	$	(0.01)	$	(0.04)

Concentration Risk, Credit Risk, Policy [Policy Text Block]

Concentration of credit risk

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair value of financial instruments

New Accounting Pronouncements, Policy [Policy Text Block]

Recently issued accounting standards

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

9 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

Accordingly, basic and diluted loss per ordinary share is calculated as follows:

	Three Months Ended December 31,		Nine Months Ended December 31,
	2017		2017
Net income	$	251,706	$	466,442
Less: Income attributable to ordinary shares subject to redemption		(326,418)		(646,162)
Adjusted net loss	$	(74,712)	$	(179,720)

Weighted average shares outstanding, basic and diluted		5,078,655		4,601,770

Basic and diluted net loss per ordinary share	$	(0.01)	$	(0.04)

FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

Description	Level	December 31, 2017		March 31, 2017
Assets:
Cash and marketable securities held in Trust Account	1	$	145,878,435	$	—

- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

+ References + Details

DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS (Details Textual) - USD ($)	1 Months Ended	9 Months Ended
	Jun. 23, 2017	Dec. 31, 2017	Dec. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Proceeds from Issuance of Private Placement	$ 5,612,500	$ 5,612,500	$ 0
Payments of Stock Issuance Costs	8,420,717	344,725	4,004
Underwriting Fee	2,875,000
Deferred Underwriting Fees	5,031,250
Payments Of Initial Public Offering Costs	514,467
Cash and Cash Equivalents, at Carrying Value		554,273	$ 0	$ 25,000	$ 16,441
Dissolution Expenses	$ 50,000
Business Combination Acquisition Description	The Company will proceed with a Business Combination if the Company has net tangible assets of at least $5,000,001 upon such consummation of a Business Combination and, if the Company seeks shareholder approval, a majority of the outstanding shares voted are voted in favor of the Business Combination. Notwithstanding the foregoing, a public shareholder, together with any affiliate of such shareholder or any other person with whom such shareholder is acting in concert or as a group (as defined under Section 13 of the Securities Exchange Act of 1934, as amended (the Exchange Act)), will be restricted from seeking redemption rights with respect to 20% or more of the ordinary shares sold in the Initial Public Offering without the Companys prior written consent.
Conversion of Stock, Description	Each Unit consists of one Public Share, one right (Public Right) and one redeemable warrant (Public Warrant). Each Public Right will convert into one-tenth (1/10) of one ordinary share (see Note 7). Each Public Warrant entitles the holder to purchase one-half () of one ordinary share at an exercise price of $11.50 per whole share
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 11.50
IPO [Member]
Sale of Stock, Number of Shares Issued in Transaction	14,375,000
Sale of Stock, Price Per Share	$ 10.00
Payments of Stock Issuance Costs		$ 8,420,717
Private Placement [Member]
Sale of Stock, Number of Shares Issued in Transaction	561,250
Sale of Stock, Price Per Share	$ 10.00
Proceeds from Issuance of Private Placement	$ 5,612,500
Over-Allotment Option [Member]
Sale of Stock, Number of Shares Issued in Transaction	1,875,000
Sale of Stock, Price Per Share	$ 10.00
Sale of Stock, Consideration Received on Transaction	$ 143,750,000
IPO and Private Placement [Member]
Sale of Stock, Price Per Share	$ 10.10
Sale of Stock, Consideration Received on Transaction	$ 145,187,500

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Net income	$ 251,706	$ 0	$ 466,442	$ (60)
Less: Income attributable to ordinary shares subject to redemption	(326,418)		(646,162)
Adjusted net loss	$ (74,712)		$ (179,720)
Weighted average shares outstanding, basic and diluted	5,078,655		4,601,770
Basic and diluted net loss per ordinary share	$ (0.01)	$ 0.00	$ (0.04)	$ (0.00)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual) - USD ($)	1 Months Ended		9 Months Ended
	Dec. 31, 2017	Jun. 23, 2017	Dec. 31, 2017	Dec. 31, 2016
Payments of Stock Issuance Costs		$ 8,420,717	$ 344,725	$ 4,004
Cash, FDIC Insured Amount	$ 250,000		250,000
Sponsor [Member]
Temporary Equity, Shares Subject To Forfeiture				562,500
IPO [Member]
Payments of Stock Issuance Costs			$ 8,420,717
Public Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	7,468,125
Public Right [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,493,625

INITIAL PUBLIC OFFERING (Details Textual)	1 Months Ended
INITIAL PUBLIC OFFERING (Details Textual)	Jun. 23, 2017 $ / shares shares
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 11.50
IPO [Member]
Sale of Stock, Number of Shares Issued in Transaction \| shares	14,375,000
Sale of Stock, Price Per Share	$ 10.00
Over-Allotment Option [Member]
Sale of Stock, Number of Shares Issued in Transaction \| shares	1,875,000
Sale of Stock, Price Per Share	$ 10.00

PRIVATE PLACEMENT (Details Textual) - USD ($)	1 Months Ended	9 Months Ended
PRIVATE PLACEMENT (Details Textual) - USD ($)	Jun. 23, 2017	Dec. 31, 2017	Dec. 31, 2016
Proceeds from Issuance of Private Placement	$ 5,612,500	$ 5,612,500	$ 0
Private Placement [Member]
Sale of Stock, Number of Shares Issued in Transaction	561,250
Proceeds from Issuance of Private Placement	$ 5,612,500
Private Placement [Member] \| Cowen Investment [Member]
Sale of Stock, Number of Shares Issued in Transaction	136,250
Private Placement [Member] \| Sponsor [Member]
Sale of Stock, Number of Shares Issued in Transaction	425,000

RELATED PARTY TRANSACTIONS (Details Textual) - USD ($)	1 Months Ended					3 Months Ended	9 Months Ended
RELATED PARTY TRANSACTIONS (Details Textual) - USD ($)	Aug. 31, 2017	Jun. 20, 2017	May 17, 2017	Mar. 29, 2017	Sep. 17, 2015	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Mar. 31, 2017
Stock Issued During Period, Value, New Issues							$ 135,329,283
Shares Issued and Outstanding Percentage						20.00%	20.00%
Related Party Transaction, Terms and Manner of Settlement							Cowen Investments has agreed not to transfer, assign or sell any of the Cowen Shares (except to certain permitted transferees) until, with respect to 50% of the Cowen Shares, the earlier of (i) one year after the date of the consummation of a Business Combination, or (ii) the date on which the closing price of the Companys ordinary shares equals or exceeds $12.50 per share for any 20 trading days within any 30- trading day period commencing after a Business Combination, and with respect to the remaining 50% of the Cowen Shares, upon one year after the date of the consummation of a Business Combination, or earlier, in each case, if, subsequent to a Business Combination, the Company consummates a subsequent liquidation, merger, stock exchange or other similar transaction which results in all of the Companys shareholders having the right to exchange their ordinary shares for cash, securities or other property. In addition, Cowen Investments has agreed (i) to waive its redemption rights with respect to such shares in connection with the completion of a Business Combination and (ii) to waive its rights to liquidating distributions from the Trust Account with respect to such shares if the Company fails to complete a Business Combination within the Combination Period.
Proceeds from Related Party Debt							$ 162,255	$ 0
Repayments of Related Party Debt							319,197	$ 14,631
Due to Related Parties, Current						$ 11,095	11,095		$ 168,037
Related Party Transaction, Expenses from Transactions with Related Party		$ 10,000				25,000	25,000
Related Party Transaction, Due from (to) Related Party						347,635	347,635
Fees and Commissions						$ 30,000	60,000
Unsecured Debt [Member]
Proceeds from Issuance of Long-term Debt							1,437,500
Promissory Notes [Member]
Debt Conversion, Original Debt, Amount							$ 1,500,000
Debt Instrument, Convertible, Conversion Price						$ 10.00	$ 10.00
Chairman And Chief Executive Officer [Member]
Proceeds from Related Party Debt							$ 162,255
IPO [Member]
Stock Issued During Period, Shares, New Issues			136,250
Founder Shares [Member]
Stock Issued During Period, Shares, New Issues	1,437,500
Stock Issued During Period, Value, New Issues	$ 25,000
Shares Issued, Price Per Share	$ 0.017
Conversion of Stock, Shares Issued				4,312,500	2,875,000
Stock Repurchased and Retired During Period, Shares			718,750
Shares, Outstanding			3,593,750			3,593,750	3,593,750
Stock Issued During Period, Shares, Forfeited							468,750
Related Party Transaction, Terms and Manner of Settlement			The initial shareholders have agreed not to transfer, assign or sell any of the founder shares (except to certain permitted transferees) until, with respect to 50% of the founder shares, the earlier of (i) one year after the date of the consummation of a Business Combination, or (ii) the date on which the closing price of the Company’s ordinary shares equals or exceeds $12.50 per share (as such amount may be adjusted) for any 20 trading days within any 30-trading day period commencing after a Business Combination, with respect to the remaining 50% of the founder shares, upon one year after the date of the consummation of a Business Combination, or earlier, in each case
Founder Shares [Member] \| Over-Allotment Option [Member]
Shares, Outstanding						468,750	468,750

COMMITMENTS AND CONTINGENCIES (Details Textual)	1 Months Ended
COMMITMENTS AND CONTINGENCIES (Details Textual)	Jun. 23, 2017 USD ($)
Cash Underwriting Discount	$ 2,875,000
Deferred Fee on Gross Proceeds of Initial Public Offering, Percentage	3.50%
Deferred Underwriting Fees	$ 5,031,250
Deferred Fees Related To Third Parties, Description	Of such amount, up to approximately 0.5% per Unit, or $718,750, may be paid to third parties not participating in the Initial Public Offering that assist the Company in consummating its Business Combination.

SHAREHOLDERS' EQUITY (Details Textual) - USD ($)	1 Months Ended	9 Months Ended
SHAREHOLDERS' EQUITY (Details Textual) - USD ($)	May 17, 2017	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Common Stock, Shares, Issued		5,086,062	4,312,500
Common Stock, Shares, Outstanding		5,078,655	4,312,500
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Number of Shares		13,443,938
Warrant Redemption Price Per Warrant		$ 0.01
Share Price		$ 18.00
Stock Issued During Period, Value, New Issues		$ 135,329,283
Related Party Transaction, Terms and Manner of Settlement		Cowen Investments has agreed not to transfer, assign or sell any of the Cowen Shares (except to certain permitted transferees) until, with respect to 50% of the Cowen Shares, the earlier of (i) one year after the date of the consummation of a Business Combination, or (ii) the date on which the closing price of the Companys ordinary shares equals or exceeds $12.50 per share for any 20 trading days within any 30- trading day period commencing after a Business Combination, and with respect to the remaining 50% of the Cowen Shares, upon one year after the date of the consummation of a Business Combination, or earlier, in each case, if, subsequent to a Business Combination, the Company consummates a subsequent liquidation, merger, stock exchange or other similar transaction which results in all of the Companys shareholders having the right to exchange their ordinary shares for cash, securities or other property. In addition, Cowen Investments has agreed (i) to waive its redemption rights with respect to such shares in connection with the completion of a Business Combination and (ii) to waive its rights to liquidating distributions from the Trust Account with respect to such shares if the Company fails to complete a Business Combination within the Combination Period.
IPO [Member]
Stock Issued During Period, Shares, New Issues	136,250
IPO [Member] \| Cowen Investment [Member]
Stock Issued During Period, Value, New Issues		$ 1,362,500
Shares Issued, Price Per Share		$ 10.00
Stock Issued During Period, Shares, New Issues		136,250
Sponsor [Member]
Temporary Equity, Shares Subject To Forfeiture				562,500

FAIR VALUE MEASUREMENTS (Details) - USD ($)	Dec. 31, 2017	Mar. 31, 2017
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and marketable securities held in Trust Account	$ 145,878,435	$ 0