ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Changes in AOCI (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Accumulated other comprehensive loss, net of taxes
Balance at the beginning	$ 256,135
Balance at the end	273,755
Accumulated Other Comprehensive Loss
Accumulated other comprehensive loss, net of taxes
Balance at the beginning	(17,066)
Other comprehensive income (loss) before reclassifications, net of tax	(1,001)
Amounts reclassified out of AOCI, net of tax (1)	1,580
Other comprehensive income (loss)	579
Balance at the end	(16,487)
Foreign Currency Translation
Accumulated other comprehensive loss, net of taxes
Balance at the beginning	(14,028)
Other comprehensive income (loss) before reclassifications, net of tax	2,555
Other comprehensive income (loss)	2,555
Balance at the end	(11,473)
Unrealized Loss on Interest Rate Hedge
Accumulated other comprehensive loss, net of taxes
Balance at the beginning	(3,038)
Other comprehensive income (loss) before reclassifications, net of tax	(3,556)
Amounts reclassified out of AOCI, net of tax (1)	1,580
Other comprehensive income (loss)	(1,976)
Balance at the end	$ (5,014)