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Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Components of comprehensive income    
Net income $ 7,031 $ 5,544
Mark to market of foreign exchange hedges   (8)
Deferred income tax benefit   2
Comprehensive income $ 7,031 $ 5,538