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Shareholders' Equity (Details) - USD ($)
 5 Months Ended 6 Months Ended 12 Months Ended
Jul. 27, 2018
May 31, 2018
May 31, 2018
May 31, 2019
Nov. 30, 2018
Preferred shares, unlimited shares authorized (in shares)       Unlimited Unlimited
Preferred shares, no par value (in dollars per share)      
Preferred shares, issued (in shares)      
Preferred shares, outstanding (in shares)      
Ordinary shares, unlimited shares authorized (in shares)       Unlimited Unlimited
Ordinary shares, no par value (in dollars per share)      
Ordinary shares, voting Rights       Ordinary shares are entitled to one vote for each share.  
Ordinary shares, issued (in shares)       1,960,378 1,906,542
Ordinary shares, outstanding (in shares)       1,960,378 1,906,542
Ordinary shares, possible redemption value       3,821,622 3,875,458
Proceeds from issuance of stock   $ 25,000    
Aggregate exercise price [1]     $ 25,000    
Cash payment       $ 100  
Public Warrant [Member]          
Warrant term       5 years  
Exercise price of warrants (in dollars per share)       $ 0.01  
Description of warrant redemption       ● 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 $16.50 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  
Chardan [Member]          
Proceeds from issuance of stock $ 100        
Number of shares issued (in shares) 240,000        
Unit exercise price (in dollars per share) $ 11.50        
Aggregate exercise price $ 2,760,000        
[1] Included an aggregate of 150,000 shares that were subject to forfeiture to the extent that the underwriters? over-allotment was not exercised in full