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Comprehensive Income (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Net earnings $ 4,920 $ 4,701 $ 8,338 $ 8,411
Foreign currency translation adjustments 452 261 1,672 1,222
Pension liability, net of tax of $52, $163, $154 and $490, respectively 80 256 241 767
Total comprehensive income $ 5,452 $ 5,218 $ 10,251 $ 10,400