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Debt - ABL Credit Facility (Details) - Revolving Credit Facility - USD ($)
Jul. 24, 2018
Sep. 30, 2020
ABL Revolver Facility    
Debt Instrument [Line Items]    
Line of credit facility, increase $ 10,000,000  
Maximum borrowing amount $ 85,000,000  
ABL Credit Facility    
Debt Instrument [Line Items]    
Outstanding receivable advance balance   $ 0
Line of credit facility, borrowing base   $ 48,800,000