Consolidated Statements of Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Accumulated other comprehensive income reclassification for change in fair value of interest rate swap agreements	$ 11		$ 31
Accumulated other comprehensive income reclassification for change in fair value of interest rate swap agreements, before 2017-12 adoption		$ 44		$ 149
Accumulated other comprehensive income reclassifications for net realized gains on available-for-sale securities	0	0	148	0
Income tax expense from reclassification	$ (2)	$ (9)	$ 25	$ (31)

Other comprehensive income loss reclassification adjustment included in net income tax.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

+ References

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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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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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