Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 1,586	$ 1,349	$ 178	$ 896
Other comprehensive income:
Foreign currency translation adjustments	4,196	1,242	5,528	383
Retirement plans related adjustments	(523)	116	(12)	234
Unrealized (loss) gain on cash flow hedges	(57)	206	318	(91)
Other comprehensive income before tax	3,616	1,564	5,834	526
Income tax (benefit) expense	(334)	16	830	(177)
Other comprehensive income, net of tax	3,950	1,548	5,004	703
Total comprehensive income	$ 5,536	$ 2,897	$ 5,182	$ 1,599