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Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Income Statement [Abstract]        
Net income (loss) $ 194 $ (817) $ 763 $ (1,042)
Other comprehensive income (loss)        
Foreign currency translation adjustments 117 263 592 (1,246)
Amortization of net prior service costs and net actuarial losses, net of tax (38) (40) (141) 51
Other comprehensive income (loss) 79 223 451 (1,195)
Comprehensive income (loss) $ 273 $ (594) $ 1,214 $ (2,237)