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Matters Concerning Shareholders' Equity (Deficit) - Additional Information (Detail)
Jun. 20, 2019
shares
Nov. 30, 2019
shares
Jun. 19, 2019
shares
Mar. 02, 2019
shares
Dec. 01, 2018
shares
Equity [Abstract]          
Reverse stock split ratio, description 1-for-20        
Reverse stock split ratio 0.05        
Common stock, shares authorized 25,000,000 25,000,000 500,000,000 25,000,000 25,000,000