Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net loss	$ (327)	$ (7,578)	$ (149)	$ (6,682)
Other comprehensive (loss) income:
Foreign currency translation adjustments	(7,169)	(6,368)	(1,641)	(5,985)
Retirement plans related adjustments	1,748	1,336	1,736	1,570
Unrealized (loss) gain on cash flow hedges	(751)	13	(433)	(78)
Other comprehensive loss before tax	(6,172)	(5,019)	(338)	(4,493)
Income tax (benefit) expense	(506)	927	324	750
Other comprehensive loss, net of tax	(5,666)	(5,946)	(662)	(5,243)
Total comprehensive loss	$ (5,993)	$ (13,524)	$ (811)	$ (11,925)