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Consolidated Statements of Income (unaudited) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Income Statement [Abstract]    
Accumulated other comprehensive income reclassification for change in fair value of interest rate swap agreements $ 69 $ 21
Income tax expense from reclassification $ (14) $ (4)