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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Statement Of Other Comprehensive Income [Abstract]        
Tax expense (benefit) for unrealized gain on derivatives $ (34) $ 47 $ (53) $ 218