LONG-TERM DEBT AND CREDIT AGREEMENT - SCHEDULE OF LONG TERM DEBT (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Term Loan, net of unamortized issuance costs and debt discount of $2,188 and $2,579 at September 30, 2021 and December 31, 2020, respectively	$ 171,062
Other long-term debt	1,087
Total debt	172,149	$ 207,700
Less: current portion	9,159	4,941
Total long-term debt	162,990	$ 202,759
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
PPP loan	$ 0