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DEBT (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Current and long-term debt    
Debt $ 157,209 $ 160,209
Current portion of long-term debt 2,123 1,720
Total long-term debt 155,086 158,489
Paycheck Protection Program Loan    
Current and long-term debt    
Debt 2,209 2,209
Senior revolving credit facility    
Current and long-term debt    
Debt $ 155,000 $ 158,000