ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME (Schedule of Accumulated Other Comprehensive Income, Net of Tax) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Foreign currency translation ending balance	$ 1,053	$ 14,952	$ 11,627
Actuarial gains related to defined benefit pension plans	(8,462)	(2,153)	(5,066)
Change in unrealized gain or loss on investment	(773)	(2)	(149)
Accumulated other comprehensive income ending balance	(8,182)	12,797	6,412
Foreign currency translation adjustments, net of tax benefit (expense)	(13,899)	3,325	3,902
Actuarial (losses) gains related to defined benefit pension plans, net of tax benefit (expense) of $2,826 in 2014, $(1,210) in 2013 and $2,628 in 2012	(6,309)	2,913	(6,778)
Unrealized Gain (Loss) on Investments	(771)	147	(946)
Other comprehensive income (loss) before reclassifications	(20,979)	6,385
Net increase (decrease) in other comprehensive income	(20,979)	6,385
Foreign currency translation	$ 0	$ 0