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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 $ 7,082 $ 8,167
Other comprehensive income:    
Currency translation adjustment 585 99
Unrealized gains on derivative instruments 1,031 335
Net gain recognized in other comprehensive income 1,616 434
Tax expense related to items of other comprehensive income (365) (150)
Impact from adoption of ASU 2018-02 [1] 59  
Other comprehensive income 1,310 284
Total comprehensive income $ 8,392 $ 8,451
[1] Reflects the stranded tax effects from change in tax rate as a result of the early adoption of ASU 2018-02 which has been reclassified to retained earnings.