LONG-TERM DEBT - Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument
Total long-term debt	$ 713,125	$ 720,000
Less: unamortized debt issuance costs	7,138	7,723
Total long-term debt, net	705,987	712,277
3.875% Senior Notes \| Senior Notes
Debt Instrument
Total long-term debt	$ 500,000	500,000
Interest rate, stated percentage	3.875%
Term Loan \| Term Loan
Debt Instrument
Total long-term debt	$ 213,125	220,000
Total long-term debt, net	$ 213,100	$ 220,000

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.

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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