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Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Income Statement [Abstract]        
Net income (loss) $ 322 $ (3,551) $ 1,085 $ (4,593)
Other comprehensive income (loss)        
Foreign currency translation adjustments (147) (1,135) 445 (2,381)
Amortization of net prior service costs and net actuarial losses, net of tax 32 (42) (109) 9
Other comprehensive income (loss) (115) (1,177) 336 (2,372)
Comprehensive income (loss) $ 207 $ (4,728) $ 1,421 $ (6,965)