ACCUMULATED OTHER COMPREHENSIVE INCOME/ (LOSS) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Accumulated other comprehensive income activity
Balance at the beginning of the period	$ 60,683	$ 60,318
Other comprehensive income (loss) before reclassifications	16,275	(9,795)
Amounts reclassified from accumulated other comprehensive income	3,333	2,421
Net current-period other comprehensive (loss)/income	19,608	(7,374)
Balance at the end of the period	80,291	52,944
Foreign Currency
Accumulated other comprehensive income activity
Balance at the beginning of the period	120,097	100,593
Other comprehensive income (loss) before reclassifications	16,275	(9,795)
Net current-period other comprehensive (loss)/income	16,275	(9,795)
Balance at the end of the period	136,372	90,798
Defined Benefit Pension Plans
Accumulated other comprehensive income activity
Balance at the beginning of the period	(59,248)	(39,907)
Amounts reclassified from accumulated other comprehensive income	3,294	2,234
Net current-period other comprehensive (loss)/income	3,294	2,234
Balance at the end of the period	(55,954)	(37,673)
Other
Accumulated other comprehensive income activity
Balance at the beginning of the period	(166)	(368)
Amounts reclassified from accumulated other comprehensive income	39	187
Net current-period other comprehensive (loss)/income	39	187
Balance at the end of the period	$ (127)	$ (181)