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DEBT - Components of Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Line of Credit Facility
Principal amount	$ 367,025	$ 449,228
Less: Unamortized debt financing costs	(7,418)	(9,653)
Less: Current portion	(55,920)	(80,642)
Long-term debt, net	303,687	358,933
Secured Debt | $495 Million Credit Facility
Line of Credit Facility
Principal amount	276,405	334,288
Less: Unamortized debt financing costs	(6,258)	(8,222)
Secured Debt | $133 Million Credit Facility
Line of Credit Facility
Principal amount	90,620	114,940
Less: Unamortized debt financing costs	$ (1,160)	$ (1,431)

X

- 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.

+ References

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X

- Definition

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

+ References

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-Publisher FASB
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- Definition

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.

+ References

No definition available.

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X

- Definition

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.

+ References

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X

- Definition

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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