Quarterly report pursuant to Section 13 or 15(d)

LONG-TERM DEBT - Schedule of Debt (Details)

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LONG-TERM DEBT - Schedule of Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Apr. 13, 2020
Mar. 31, 2020
Debt Instrument      
Less: current portion $ (1,850)   $ (7,321)
Less: unamortized debt issuance costs (21,042)   (13,660)
Long-term debt, net of current portion 178,276   146,847
Notes Payable | Paycheck Protection Program Loan      
Debt Instrument      
Amended PNC Credit Facility 10,000 $ 10,000 0
Line of Credit | Amended PNC Credit Facility      
Debt Instrument      
Amended PNC Credit Facility 5,960   2,620
Senior Secured Debt | Senior Secured Term Loan      
Debt Instrument      
Senior Secured Term Loan $ 185,208   $ 165,208