ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Accumulated other comprehensive income activity
Balance at the beginning of the period	$ 60,683	$ 60,318
Other comprehensive loss before reclassifications	(29,067)	(28,817)
Amounts reclassified from accumulated other comprehensive income	2,224	1,665
Net current-period other comprehensive (loss)/income	(26,843)	(27,152)
Balance at the end of the period	33,840	33,166
Foreign Currency
Accumulated other comprehensive income activity
Balance at the beginning of the period	120,097	100,593
Other comprehensive loss before reclassifications	(29,067)	(28,817)
Net current-period other comprehensive (loss)/income	(29,067)	(28,817)
Balance at the end of the period	91,030	71,776
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	2,194	1,492
Net current-period other comprehensive (loss)/income	2,194	1,492
Balance at the end of the period	(57,054)	(38,415)
Other
Accumulated other comprehensive income activity
Balance at the beginning of the period	(166)	(368)
Amounts reclassified from accumulated other comprehensive income	30	173
Net current-period other comprehensive (loss)/income	30	173
Balance at the end of the period	$ (136)	$ (195)