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Condensed Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Condensed Consolidated Statements of Comprehensive Income    
Net income $ 4,377 $ 5,302
Other comprehensive income, net of tax:    
Currency translation adjustment 1,069 2,026
Other comprehensive income 1,069 2,026
Comprehensive income $ 5,446 $ 7,328