Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,048)	$ (1,245)
Other comprehensive income:
Foreign currency translation adjustments	4,258	3,739
Retirement plans related adjustments	276	(273)
Unrealized gain on cash flow hedges	231	165
Other comprehensive income before tax	4,765	3,631
Income tax expense (benefit)	419	(177)
Other comprehensive income, net of tax	4,346	3,808
Total comprehensive income (loss)	$ 2,298	$ 2,563

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.

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