Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Unrealized gain (loss) on securities, tax expense (benefit)	$ 470	$ (33)	$ (204)
Reclassification adjustment for gains included in net income, tax expense		(53)
Accretion of unrealized loss on securities reclassified to held-to-maturity, tax expense	$ 404	$ 1,186	$ 480