INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ (4,304)	$ (1,748)	$ (703)
State and local	(2,504)	(1,921)	(1,713)
Total current	(6,808)	(3,669)	(2,416)
Deferred:
Federal	10,461	10,343	(7,989)
State and local	1,386	452	(790)
Total deferred	11,847	10,795	(8,779)
Income tax benefit (expense)	5,039	7,126	(11,195)
Reconciliation of income taxes computed at the United States federal statutory tax rate to income tax benefit (expense)
Income tax benefit (expense) at U.S. statutory rate	64,535	(2,822)	(12,675)
State income taxes, net of federal benefit	12,547	(418)	(1,904)
State income taxes, valuation allowance	(13,140)
Share-based compensation	80	3,003	4,148
Valuation allowance	(48,677)
Loss on noncontrolling interest		(113)	(1,138)
Change in tax laws	1,104	7,828
Changes in uncertain tax positions	(636)
Disallowed compensation	(678)
Impairment losses	(9,674)
Other	(422)	(352)	374
Income tax benefit (expense)	5,039	7,126	(11,195)
Deferred tax assets:
Intangible assets	50,630
Allowance for doubtful accounts	6,501	5,696
Net operating loss and credit carryforwards	4,064	2,114
Compensation and benefits	7,407	4,611
Other temporary differences	2,164	679
Total deferred tax assets	70,766	13,100
Valuation allowance	(62,916)
Total net deferred tax assets	7,850	13,100
Deferred tax liabilities:
Property and equipment	(9,358)	(8,221)
Intangibles assets		(18,185)
Prepaid expenses and other current assets	(1,158)	(740)
Investments	(115)	(321)
Total deferred tax liabilities	(10,631)	(27,467)
Net deferred tax liabilities	(2,781)	$ (14,367)
Net operating loss carry-forwards, state and local	$ 40,970
U.S. federal corporate tax rate	21.00%	35.00%
Additional income tax benefit	$ 1,104	$ 7,828
Change in unrecognized tax benefits
Balance, January 1,	268	268	0
Additions based on tax positions of prior years	783	0	268
Additions based on tax positions of the current year	1,302	0	0
Reductions due to lapse in statute of limitations	(268)	0	0
Balance, December 31,	2,085	$ 268	$ 268
Impact on the effective tax rate, if unrecognized tax benefits were recognized	816
Decrease in unrecognized tax benefits in the next twelve months primarily due to the progression of federal audits and filing of various change in accounting methods	$ 723