ACCUMULATED OTHER COMPREHENSIVE LOSS - Summary of Changes in Accumulated Other Comprehensive Income (Loss) Included Within Shareholders' Equity (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Tax Provision
Balance, beginning of period	$ 5,183	$ 2,284
Other comprehensive income (loss) before tax	(1,318)	554
Noncontrolling interest	0	0
Balance, end of period	3,865	2,838
Total
Balance, beginning of period	338,146	339,107
Balance, end of period	550,143	336,831
Foreign Currency Translation Adjustments
Before Tax
Balance, beginning of period	(28,124)	(13,718)
Other comprehensive income (loss) before tax	3,050	(6,899)
Noncontrolling interest	0	34
Balance, end of period	(25,074)	(20,583)
Foreign Currency Hedge
Before Tax
Balance, beginning of period	4,567	3,028
Other comprehensive income (loss) before tax	(243)	1,305
Noncontrolling interest	0	0
Balance, end of period	4,324	4,333
Total
Total
Balance, beginning of period	(18,374)	(8,406)
Other comprehensive income (loss) before tax	1,489	(5,040)
Noncontrolling interest	0	34
Balance, end of period	$ (16,885)	$ (13,412)