INCOME TAXES (DTA AND DTL TABLE) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets, gross
Accrued workers compensation, deferred compensation and employee benefits	$ 7,999	$ 8,724
Allowance for doubtful accounts, insurance and other accruals	3,393	3,301
Amortization of deferred lease liabilities	25,757	2,614
Net operating losses	19,222	18,475
Equity compensation	1,442	1,348
Customer acquisition and deferred revenue accruals	9,047	13,894
Federal and state tax credits, net	1,263	549
Unrealized losses on derivatives	1,421	2,035
DTA Impairment of equity investment	4,142	4,221	$ 4,200
Partnership investment	2,435	0
Other	1,322	1,001
Total deferred tax assets, gross	77,443	56,162
Valuation allowances	(17,051)	(10,867)		$ (9,526)	$ (9,949)
Deferred Tax Assets, Net of Valuation Allowance, Total	60,392	45,295
Deferred tax liabilities
Depreciation and amortization	(6,095)	(15,547)
Unrealized gain on derivatives	(1,491)	0
Contract acquisition costs	(5,740)	(8,519)
Intangible Assets	(22,585)	(15,890)
DTL Operating lease assets	(21,413)	0
Other	(407)	(187)
Total deferred tax liabilities	(57,731)	(40,143)
Deferred Tax Assets, Net, Total	$ 2,661	$ 5,152