CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Changes in AOCI by component
Beginning balance, net of tax	$ (29,858)	$ (25,509)
Other comprehensive income before reclassifications	1,401	(1,892)
Less income reclassified from AOCI	644	1,122
Net other comprehensive (loss) income	757	(3,014)
Income tax benefit (expense)	244	(334)
Ending balance, net of tax	(28,857)	(28,857)
Foreign currency translation adjustment
Changes in AOCI by component
Beginning balance, net of tax	31,309	36,830
Other comprehensive income before reclassifications	215	(4,844)
Net other comprehensive (loss) income	215	(4,844)
Income tax benefit (expense)	322	(140)
Ending balance, net of tax	31,846	31,846
Retirement plan related adjustment
Changes in AOCI by component
Beginning balance, net of tax	(61,115)	(62,375)
Other comprehensive income before reclassifications	1,048	3,060
Less income reclassified from AOCI	564	1,132
Net other comprehensive (loss) income	484	1,928
Income tax benefit (expense)	(26)	(210)
Ending balance, net of tax	(60,657)	(60,657)
Unrealized gain (loss) on cash flow hedges
Changes in AOCI by component
Beginning balance, net of tax	(52)	36
Other comprehensive income before reclassifications	138	(108)
Less income reclassified from AOCI	80	(10)
Net other comprehensive (loss) income	58	(98)
Income tax benefit (expense)	(52)	16
Ending balance, net of tax	$ (46)	$ (46)