Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 1,349	$ 2,265	$ 896	$ 2,305
Other comprehensive income (loss):
Foreign currency translation adjustments	1,242	215	383	(4,844)
Retirement plans related adjustments	116	484	234	1,928
Unrealized gain (loss) on cash flow hedges	206	58	(91)	(98)
Other comprehensive income (loss) before tax	1,564	757	526	(3,014)
Income tax expense (benefit)	16	(244)	(177)	334
Other comprehensive income (loss), net of tax	1,548	1,001	703	(3,348)
Total comprehensive income (loss)	$ 2,897	$ 3,266	$ 1,599	$ (1,043)