DEBT OBLIGATIONS - Rolling Maturities of Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
2022 (current)	$ 3,000
2023	3,000
2024	3,000
2025	3,000
2026	33,000
Beyond five years	285,000
Total debt obligations	330,000	$ 382,040
Line of Credit \| Credit and Guaranty Agreement \| Term Loan
Debt Instrument [Line Items]
2022 (current)	3,000
2023	3,000
2024	3,000
2025	3,000
2026	3,000
Beyond five years	285,000
Total debt obligations	300,000
Line of Credit \| Credit and Guaranty Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
2022 (current)	0
2023	0
2024	0
2025	0
2026	30,000
Beyond five years	0
Total debt obligations	$ 30,000

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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