LONG-TERM DEBT - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2021	Dec. 31, 2020
Total debt	$ 234,457	$ 234,457
Less: unamortized debt issuance cost	(4,254)	(5,024)
Total debt, net of unamortized debt issuance cost	230,203	229,433
Less: current portion of long-term debt	(1,255)
Long-term debt, net	$ 228,948	$ 229,433
First Lien Term Loan Facility [Member]
Long-term debt, Interest Rate	3.90%	4.00%
Long-term debt, Maturities	2026
Total debt	$ 202,457	$ 202,457
Second Lien Term Loan Facility [Member]
Long-term debt, Interest Rate	7.70%	7.70%
Long-term debt, Maturities	2027
Total debt	$ 25,000	$ 25,000
First Lien Revolving Facility [Member]
Long-term debt, Interest Rate	3.90%	4.00%
Long-term debt, Maturities	2024
Total debt	$ 7,000	$ 7,000

Debt instrument maturity year.

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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