CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Changes in AOCI by component
Beginning balance	$ (25,509)
Other comprehensive income before reclassifications	(3,293)
Amounts reclassified from AOCI	478
Net other comprehensive income	(3,771)
Income tax expense (benefit)	(578)
Ending balance	(29,858)
Foreign currency translation adjustment
Changes in AOCI by component
Beginning balance	36,830
Other comprehensive income before reclassifications	(5,059)
Net other comprehensive income	(5,059)
Income tax expense (benefit)	(462)
Ending balance	31,309
Retirement plan related adjustment
Changes in AOCI by component
Beginning balance	(62,375)
Other comprehensive income before reclassifications	2,012
Amounts reclassified from AOCI	568
Net other comprehensive income	1,444
Income tax expense (benefit)	(184)
Ending balance	(61,115)
Unrealized gain (loss) on cash flow hedges
Changes in AOCI by component
Beginning balance	36
Other comprehensive income before reclassifications	(246)
Amounts reclassified from AOCI	(90)
Net other comprehensive income	(156)
Income tax expense (benefit)	68
Ending balance	$ (52)