ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (ROLLFORWARD TABLE) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance, value	$ 362,845
Ending balance, value	345,223
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance, value	(102,304)	$ (126,964)
Other comprehensive income (loss) before reclassifications	(1,605)	18,702
Amounts reclassified from accumulated other comprehensive income (loss)	(3,994)	(4,253)
Net current period other comprehensive income (loss)	(5,599)	14,449
Ending balance, value	(107,903)	(112,515)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance, value	(84,100)	(92,008)
Other comprehensive income (loss) before reclassifications	(5,700)	6,136
Net current period other comprehensive income (loss)	(5,700)	6,136
Ending balance, value	(89,800)	(85,872)
Derivative Valuation, Net of Tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance, value	(15,746)	(32,393)
Other comprehensive income (loss) before reclassifications	3,886	12,320
Amounts reclassified from accumulated other comprehensive income (loss)	(3,893)	(4,136)
Net current period other comprehensive income (loss)	(7)	8,184
Ending balance, value	(15,753)	(24,209)
Other Net of Tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance, value	(2,458)	(2,563)
Other comprehensive income (loss) before reclassifications	209	246
Amounts reclassified from accumulated other comprehensive income (loss)	(101)	(117)
Net current period other comprehensive income (loss)	108	129
Ending balance, value	$ (2,350)	$ (2,434)