Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other comprehensive income (loss), net of tax:
Change in fair value of securities available for sale, tax	$ (586)	$ 43	$ (384)
Reclassification adjustment for gain on securities available for sale, tax	17	176	0
Change in fair value of interest rate swap, tax	66	(36)	(1)
Change in unrecognized benefit obligation for Supplemental Executive Retirement Plan, tax	(4)	(4)	(27)
Other comprehensive income (loss), tax	$ (507)	$ 179	$ (412)

Amount, after reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.

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