INCOME TAXES - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Differences between the expected U.S. federal statutory income tax to income tax expense
Expected tax at federal statutory rate	$ 93,507	$ 74,392	$ 48,908
State income tax, net of federal benefit	848	(26)	325
Federal and state research credits	1,260	0	0
Noncontrolling Interest	(21,626)	(14,577)	(7,078)
Other	1,129	839	326
Change in valuation allowance	1,321	(197)	(579)
Income tax expense (benefit), net	$ 76,439	$ 60,431	$ 41,902

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

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