INCOME TAXES - Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of the federal statutory tax rate to the Company's effective tax rate
Federal statutory tax rate - (benefit) provision (as a percent)	(35.00%)	(35.00%)	(35.00%)
State and local income taxes (as a percent)	(0.70%)	(0.40%)	(1.60%)
Change in valuation allowance (as a percent)	0.70%		0.30%
Federal statutory tax rate change effect on deferred balance (as a percent)	45.00%
Change in uncertain tax positions (as a percent)	0.30%	(0.90%)	(0.20%)
Goodwill impairment (as a percent)	21.10%	22.30%	18.40%
Other (as a percent)	3.90%	1.10%	0.60%
Effective tax rate applicable to continuing operations	35.30%	(12.90%)	(17.50%)