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DEBT - Narrative (Details) - USD ($)
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
May 14, 2019
Debt Instrument [Line Items]      
Debt Instrument, Unused Borrowing Capacity, Amount $ 26,400,000    
Cash paid for interest $ 32,000 $ 771,000  
Maximum borrowing capacity, percentage of accounts receivable 85.00%    
Principal payments of debt $ 11,000 $ 10,010,000  
Lines of credit      
Debt Instrument [Line Items]      
Maximum borrowing capacity $ 40,000,000.0    
Debt instrument, interest rate 2.75%    
Commitment fee percentage 0.15%    
Lines of credit | Loan Facility, Threshold Two [Member] | Prime Rate      
Debt Instrument [Line Items]      
Basis spread on variable rate 0.50%    
Term loans      
Debt Instrument [Line Items]      
Debt instrument, interest rate 2.00%    
Term loans | Prime Rate      
Debt Instrument [Line Items]      
Basis spread on variable rate 2.75%    
Revolving Credit Facility | Lines of credit      
Debt Instrument [Line Items]      
Line of Credit, Current     $ 40,000,000.0