INCOME TAXES (Provision for Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
Domestic	$ 87,328	$ 164,105	$ 44,737
Foreign	(78,612)	(54,459)	(6,215)
(Loss) income before (benefit) provision for income taxes	8,716	109,646	38,522
Current:
Federal	14,798	46,775	17,184
State	8,763	11,120	6,918
Foreign	9,844	5,719	10,428
Current Income Tax Expense (Benefit)	33,405	63,614	34,530
Deferred
Federal	21,814	12,254	33,858
State	1,644	2,766	1,840
Foreign	(8,274)	(13,090)	(3,378)
Deferred income taxes	15,184	1,930	32,320
Provision for income taxes	48,589	65,544	66,850
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Tax expense at US statutory rate	3,051	38,376	13,483
State income taxes, net of federal benefit	6,010	8,449	7,429
Foreign rate differential	3,646	3,951	(2,916)
Valuation allowance	22,564	1,824	827
Uncertain tax position interest and penalties	107	32	2,217
Goodwill impairment	11,905	10,974	44,273
Other	1,306	1,938	1,537
Provision for income taxes	$ 48,589	$ 65,544	$ 66,850