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NATURE OF OPERATIONS - Nature of Operations (Detail) - USD ($)
$ / shares in Units, $ in Millions
Jan. 31, 2021
Nov. 19, 2020
Jul. 31, 2020
Nature Of Operations [Line Items]      
Cash and cash equivalents $ 87.6   $ 75.9
Working capital deficit $ 4.0    
Preferred stock, par value (in usd per share) $ 0.01   $ 0.01
Minimum | Common Stock      
Nature Of Operations [Line Items]      
Preferred stock, par value (in usd per share)   $ 0.65  
Maximum | Common Stock      
Nature Of Operations [Line Items]      
Preferred stock, par value (in usd per share)   $ 0.72  
PNC bank credit facility      
Nature Of Operations [Line Items]      
Credit facility, readily available borrowing capacity $ 8.8    
Cerberus Credit Facility      
Nature Of Operations [Line Items]      
Credit facility, readily available borrowing capacity $ 25.0