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Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]        
Net Income (Loss) $ 5,086 $ 752 $ 5,982 $ (9,217)
Other Comprehensive Income (Loss), net of tax        
Net unrealized gain (loss) on available-for-sale securities (95) 373 (287) 490
Defined benefit plan adjustments 212 191 311 332
Foreign currency translation 338 1,899 (1,525) 249
Other Comprehensive Income (Loss), net of tax 455 2,463 (1,501) 1,071
Comprehensive Income (Loss), net of tax $ 5,541 $ 3,215 $ 4,481 $ (8,146)