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Statements of Consolidated Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Comprehensive Income Net Of Tax [Abstract]    
Net income $ 1,824 $ 5,528
Other comprehensive income, net of tax    
Foreign currency translation adjustment 1,353 3,832
Recognized net actuarial gain (net of tax provision of $32 and $30 for the three months ended March 31, 2019 and 2018, respectively). 93 91
Other comprehensive income, net of tax 1,446 3,923
Comprehensive income $ 3,270 $ 9,451