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Statements of Consolidated Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Comprehensive Income Net Of Tax [Abstract]    
Net income $ 1,518 $ 2,658
Other comprehensive income, net of tax    
Foreign currency translation adjustment 5,472 3,867
Other comprehensive income, net of tax 5,544 3,944
Recognized net actuarial gain (net of tax provision of $44 and $46 for the three months ended March 31, 2017 and 2016, respectively. 72 77
Comprehensive income $ 7,062 $ 6,602