Consolidated Statements of Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Accumulated other comprehensive income reclassification for change in fair value of interest rate swap agreements	$ 14	$ 46	$ 20	$ 105
Accumulated other comprehensive income reclassifications for net realized gains on available-for-sale securities	0	0	148	0
Income tax expense from reclassification	$ (3)	$ (10)	$ 27	$ (22)

Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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