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Private Placement - Additional Information (Detail) - USD ($)
6 Months Ended
Jul. 16, 2019
Sep. 30, 2019
Proceeds from issuance of warrants   $ 6,350,000
Private Placement [Member]    
Warrants and rights issued 4,233,333  
Warrants price $ 1.50  
Proceeds from issuance of warrants $ 6,350,000