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LONG-TERM DEBT - Narrative (Details) - Asset-backed Revolving Line of Credit - ABL Revolver - USD ($)
Mar. 17, 2020
Sep. 30, 2020
Aug. 29, 2017
Debt Instrument [Line Items]      
Maximum borrowing capacity under credit agreement $ 135,000,000   $ 85,000,000.0
Increase in borrowing capacity under credit agreement $ 50,000,000.0    
Amount outstanding under credit facility   $ 0  
Borrowing capacity, including impact of letter of credit   $ 114,300,000