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Comprehensive Loss - Reclassifications out of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance $ 26,309 $ 30,566
Balance 25,239 30,471
Accumulated Other Comprehensive Loss    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance (920) (15)
Other comprehensive income (loss) before reclassifications, net of taxes (884) 264
Total other comprehensive income (loss) before reclassifications, net of taxes (1,804) 249
Net amount reclassified to earnings 9 (36)
Balance (1,795) 213
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance (53) 1,451
Total other comprehensive income (loss) before reclassifications, net of taxes (53) 1,451
Net amount reclassified to earnings 14 (36)
Balance (39) 1,415
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance 33  
Other comprehensive income (loss) before reclassifications, net of taxes (166)  
Total other comprehensive income (loss) before reclassifications, net of taxes (133)  
Net amount reclassified to earnings (5)  
Balance (138)  
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance (900) (1,466)
Other comprehensive income (loss) before reclassifications, net of taxes (718) 264
Total other comprehensive income (loss) before reclassifications, net of taxes (1,618) (1,202)
Balance $ (1,618) $ (1,202)