CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Changes in AOCI by component
Beginning balance, net of tax	$ (2,264)	$ (29,858)	$ (1,419)	$ (25,509)
Other comprehensive income (loss) before reclassifications	1,868	1,401	1,001	(1,892)
Less income (loss) reclassified from AOCI	304	644	475	1,122
Net other comprehensive income (loss)	1,564	757	526	(3,014)
Income taxes	(16)	244	177	(334)
Ending balance, net of tax	(716)	(28,857)	(716)	(28,857)
Foreign currency translation adjustment
Changes in AOCI by component
Beginning balance, net of tax	37,957	31,309	38,663	36,830
Other comprehensive income (loss) before reclassifications	1,242	215	383	(4,844)
Net other comprehensive income (loss)	1,242	215	383	(4,844)
Income taxes	(17)	322	(170)	140
Ending balance, net of tax	39,216	31,846	39,216	31,846
Retirement plans related adjustments
Changes in AOCI by component
Beginning balance, net of tax	(40,074)	(61,115)	(40,213)	(62,375)
Other comprehensive income (loss) before reclassifications	365	1,048	731	3,060
Less income (loss) reclassified from AOCI	249	564	497	1,132
Net other comprehensive income (loss)	116	484	234	1,928
Income taxes	(1)	(26)	(22)	210
Ending balance, net of tax	(39,957)	(60,657)	(39,957)	(60,657)
Unrealized gain (loss) on cash flow hedges
Changes in AOCI by component
Beginning balance, net of tax	(147)	(52)	131	36
Other comprehensive income (loss) before reclassifications	261	138	(113)	(108)
Less income (loss) reclassified from AOCI	55	80	(22)	(10)
Net other comprehensive income (loss)	206	58	(91)	(98)
Income taxes	34	(52)	15	(16)
Ending balance, net of tax	$ 25	$ (46)	$ 25	$ (46)