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Comprehensive Income (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Net earnings $ 1,523 $ 1,303 $ 4,339 $ 3,418
Foreign currency translation adjustments (991) 533 (1,110) 1,220
Pension liability, net of tax of $42, $56, $83, and $102, respectively 118 88 236 161
Total comprehensive income $ 650 $ 1,924 $ 3,465 $ 4,799