Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Net income (loss)	$ 569	$ (225)
Other comprehensive income (loss)
Foreign currency translation adjustments	475	(1,508)
Amortization of net prior service costs and net actuarial losses, net of tax	(103)	90
Other comprehensive income (loss)	372	(1,418)
Comprehensive income (loss)	$ 941	$ (1,643)