INCOME TAXES (DTA AND DTL TABLE) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets, gross
Accrued workers compensation, deferred compensation and employee benefits	$ 8,441	$ 8,574
Allowance for doubtful accounts, insurance and other accruals	4,767	4,463
Amortization of deferred lease liabilities	15,816	20,352
Net operating losses	18,006	20,508
Equity compensation	2,302	1,660
Customer acquisition and deferred revenue accruals	20,069	6,868
Federal and state tax credits, net	2,759	2,383
Unrealized losses on derivatives	22	1,187
DTA Impairment of equity investment	4,064	4,064
Partnership investment	106	526
Other	5,052	5,444
Total deferred tax assets, gross	81,404	76,029
Valuation allowances	(29,620)	(18,697)	$ (17,051)	$ (10,867)
Deferred Tax Assets, Net of Valuation Allowance, Total	51,784	57,332
Deferred tax liabilities
Depreciation and amortization	(10,291)	(10,734)
Unrealized gain on derivatives	0	(2,959)
Contract acquisition costs	(1,831)	(3,182)
Intangible Assets	(21,202)	(15,880)
DTL Operating lease assets	(12,481)	(16,763)
Other	(184)	(480)
Total deferred tax liabilities	(45,989)	(49,998)
Deferred Tax Assets, Net, Total	$ 5,795	$ 7,334