Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Commitments - Additional Information (Detail)

v3.20.1
Commitments - Additional Information (Detail) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Commitments [line items]    
Purchase orders remain outstanding $ 1,327,294 $ 12,756,962
Deposits $ 481,400 $ 8,541,630