Quarterly report pursuant to Section 13 or 15(d)

Inventory - Additional Information (Detail)

v3.20.2
Inventory - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Aug. 31, 2019
May 31, 2019
Aug. 31, 2019
Inventory Disclosure [Abstract]      
Other Asset Impairment Charges $ 2,332,763 $ 2,332,763 $ 2,332,763