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Condensed Balance Sheets (Parenthetical) - $ / shares
9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Statement of Financial Position [Abstract]    
Ordinary shares subject to possible redemption 5,027,689  
Ordinary shares, par value (in dollars per share)
Ordinary shares, authorized Unlimited Unlimited
Ordinary shares, issued 2,429,811 1,437,500
Ordinary shares, outstanding 2,429,811 1,437,500