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STOCKHOLDERS' EQUITY - Additional Information (Detail)
$ / shares in Units, $ in Millions
Dec. 15, 2017
USD ($)
day
$ / shares
shares
Oct. 31, 2019
$ / shares
shares
Jul. 31, 2019
$ / shares
shares
Equity [Line Items]      
Preferred stock, shares issued (in shares) | shares   0 0
Preferred stock, par value (in usd per share)   $ 0.01 $ 0.01
Common stock, par value (in usd per share)   $ 0.01 $ 0.01
Series C Convertible Preferred Stock      
Equity [Line Items]      
Common stock, par value (in usd per share) $ 0.01    
Convertible preferred stock conversion price per share (in usd per share) $ 1.96    
Preferred stock, dividend rate, percentage 6.00%    
Percentage threshold closing sale price of common stock higher than conversion price 170.00%    
Series C Convertible Preferred Stock | Minimum      
Equity [Line Items]      
Trading days | day 5    
Purchase Agreement | SPHG Holdings | Series C Convertible Preferred Stock      
Equity [Line Items]      
Preferred stock, shares issued (in shares) | shares 35,000    
Preferred stock, par value (in usd per share) $ 0.01    
Price per share (in usd per share) $ 1,000    
Proceeds from issuance of preferred stock | $ $ 35.0    
Preferred stock preference, percentage of stated value 100.00%    
Preferred stock preference, percentage of declared but unpaid dividends 100.00%