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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Statement of Comprehensive Income [Abstract]      
Tax (benefit) provision of unrealized loss on interest rate swap $ 1,037 $ (5,914) $ (6,692)
Tax (benefit) provision of reclassification adjustment $ 5,036 $ 4,987 $ 4,256