INCOME TAXES - Income Tax Reconciliation when Applying the Statutory Federal Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Federal statutory income tax	$ 17,731	$ (8,931)	$ 6,506
State income taxes, net	1,269	(3,551)	(1,832)
Excess tax deductions on non-cash compensation	(9,401)	(2,033)	(13,971)
Impact of the Coronavirus Aid, Relief, and Economic Security Act	0	(6,104)	0
Research and experimentation tax credit	(3,207)	(3,800)	(5,794)
Impact of certain state legislation, net	0	0	3,932
Nondeductible executive compensation	3,058	1,778	988
Increase (decrease) in valuation allowance	595	2,100	954
Uncertain tax positions	435	458	922
Nondeductible meals & entertainment	239	99	428
Other, net	579	23	(612)
Income tax expense (benefit)	$ 11,298	$ (19,961)	$ (8,479)

Effective Income Tax Rate Reconciliation, CARES Act, Amount

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Proceeds And Excess Tax Benefit From Share based Compensation, Federal

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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