INCOME TAXES - Provision for Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
Domestic	$ 223,438	$ 168,117	$ 156,571
Foreign	46,277	6,433	(8,332)
Income from operations before provision for income taxes	269,715	174,550	148,239
Current:
Federal	42,480	33,327	20,482
State	18,126	14,575	14,564
Foreign	4,380	1,559	7,448
Current income taxes	64,986	49,461	42,494
Deferred
Federal	2,275	(965)	7,933
State	(4,777)	(2,506)	550
Foreign	3,984	(6,277)	(478)
Deferred income taxes	1,482	(9,748)	8,005
Provision for income taxes	$ 66,468	$ 39,713	$ 50,499
Effective tax rate	24.60%	22.80%	34.10%
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Tax expense at US statutory rate	$ 56,640	$ 36,655	$ 31,130
State income taxes, net of federal benefit	12,101	9,837	10,597
Foreign rate differential	1,922	1,256	276
Valuation allowance	(9,139)	(11,339)	4,459
Uncertain tax position interest and penalties	263	(712)	474
Tax credits expired (used)	2,530	2,039	(50)
Non-deductible compensation	2,326	1,406	1,922
Other	(175)	571	1,691
Provision for income taxes	$ 66,468	$ 39,713	$ 50,499