INCOME TAXES (Provision for Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
Domestic	$ 164,105	$ 44,737	$ 85,775
Foreign	(54,459)	(6,215)	58,110
Income before provision for income taxes	109,646	38,522	143,885
Current:
Federal	46,775	17,184	5,264
State	11,120	6,918	5,006
Foreign	5,719	10,428	6,930
Current Income Tax Expense (Benefit)	63,614	34,530	17,200
Deferred
Federal	12,254	33,858	20,574
State	2,766	1,840	2,074
Foreign	(13,090)	(3,378)	8,471
Deferred income taxes	1,930	32,320	31,119
Provision for income taxes	$ 65,544	$ 66,850	$ 48,319
Effective income tax rate	59.80%	173.50%	33.60%
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Tax expense at US statutory rate	$ 38,376	$ 13,483	$ 50,360
State income taxes, net of federal benefit	8,449	7,429	4,052
Foreign rate differential	3,951	(2,916)	(10,478)
Non-deductible transaction costs	0	0	657
Uncertain tax position releases	0	0	(4,010)
Uncertain tax position interest and penalties	32	2,217	457
Goodwill impairment	10,974	44,273	0
Other	3,762	2,364	7,281
Provision for income taxes	$ 65,544	$ 66,850	$ 48,319