Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Net loss	$ (1,063)	$ (5,881)
Other comprehensive income (loss)
Foreign currency translation adjustments	(37)	(2,468)
Amortization of net prior service costs and net actuarial losses, net of tax	(157)	124
Other comprehensive loss	(194)	(2,344)
Comprehensive loss	$ (1,257)	$ (8,225)