CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Changes in AOCI by component
Beginning balance, net of tax	$ (716)	$ (28,663)	$ (1,419)	$ (25,509)
Other comprehensive (loss) income before reclassifications	(4,752)	7,408	(3,751)	5,710
Less income reclassified from AOCI	267	595	742	1,717
Net other comprehensive (loss) income	(5,019)	6,813	(4,493)	3,993
Income taxes	(927)	196	(750)	(138)
Ending balance, net of tax	(6,662)	(21,654)	(6,662)	(21,654)
Foreign currency translation adjustment
Changes in AOCI by component
Beginning balance, net of tax	39,216	32,040	38,663	36,830
Other comprehensive (loss) income before reclassifications	(6,368)	6,969	(5,985)	2,319
Net other comprehensive (loss) income	(6,368)	6,969	(5,985)	2,319
Income taxes	756	(93)	586	47
Ending balance, net of tax	32,092	39,102	32,092	39,102
Retirement plans related adjustments
Changes in AOCI by component
Beginning balance, net of tax	(39,957)	(60,657)	(40,213)	(62,375)
Other comprehensive (loss) income before reclassifications	1,585	68	2,316	3,128
Less income reclassified from AOCI	249	568	746	1,700
Net other comprehensive (loss) income	1,336	(500)	1,570	1,428
Income taxes	170	(120)	148	90
Ending balance, net of tax	(38,791)	(61,037)	(38,791)	(61,037)
Unrealized gain (loss) on cash flow hedges
Changes in AOCI by component
Beginning balance, net of tax	25	(46)	131	36
Other comprehensive (loss) income before reclassifications	31	371	(82)	263
Less income reclassified from AOCI	18	27	(4)	17
Net other comprehensive (loss) income	13	344	(78)	246
Income taxes	1	17	16	1
Ending balance, net of tax	$ 37	$ 281	$ 37	$ 281