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DEBT - Paycheck Protection Program Loan (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
	Apr. 16, 2020	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Aug. 13, 2021
Current and long-term debt
Proceeds from issuance of debt			$ 145,000	$ 119,209
Gain on extinguishment and accrued interest		$ 2,068	2,068
Paycheck Protection Program Loan
Current and long-term debt
Principal amount					$ 200
Proceeds from issuance of debt	$ 2,200
Interest rate (as a percent)	1.00%
Gain on extinguishment and accrued interest			$ 2,100

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Face (par) amount of debt instrument at time of issuance.

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

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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