ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2013	$ 927
Other comprehensive income before reclassifications	(25,411)
Amounts reclassified from accumulated other comprehensive income	996
Current period other comprehensive income (loss)	(24,415)
Balance at December 31, 2014	(23,488)
Gains and Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2013	(1,390)
Other comprehensive income before reclassifications	(118)
Amounts reclassified from accumulated other comprehensive income	996
Current period other comprehensive income (loss)	878
Balance at December 31, 2014	(512)
Defined Benefit Pension Items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2013	(2,287)
Other comprehensive income before reclassifications	1,381
Amounts reclassified from accumulated other comprehensive income	0
Current period other comprehensive income (loss)	1,381
Balance at December 31, 2014	(906)
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2013	4,604
Other comprehensive income before reclassifications	(26,674)
Amounts reclassified from accumulated other comprehensive income	0
Current period other comprehensive income (loss)	(26,674)
Balance at December 31, 2014	$ (22,070)