INCOME TAXES - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation from the tax computed at statutory income tax rates to the Company's income tax expense
Tax computed at statutory U.S. federal income tax rates									$ 15,782	$ 19,652	$ 30,160
Non-controlling interest									(2,893)	(2,807)	(1,229)
Foreign tax rate differential									(3,074)	1,659	(5,757)
Over (under) provided in prior periods									1,069	652	(401)
Nondeductible expenses									1,134	1,113	757
Goodwill Impairment									2,622
Capitalized transactions costs									3,138
Change in tax reserves									2,561	2,564	2,153
State Taxes, net of federal benefit									1,853	935	1,252
Change in valuation allowance									(7,292)	(5,949)	(2,549)
Foreign tax credit expiration									4,179	6,396	2,999
Other, net									2,081	(78)	763
Total Income Tax Expense	$ 3,982	$ 9,602	$ 2,945	$ 4,631	$ 1,482	$ 10,134	$ 13,008	$ (487)	$ 21,160	$ 24,137	$ 28,148