Securities, Gains (Loss) on Securities, Securities Pledged, and Securities Sold Under Agreements to Repurchase (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) Security	Jun. 30, 2020 USD ($) Security	Dec. 31, 2020 USD ($)
Gains (Loss) on Sales of Securities [Abstract}
Net securities gain	$ 280	$ 937	$ 112	$ 1,186
Realized pre-tax gain on sales and calls of AFS securities		564	60	1,100
Unrealized gain from fair market value adjustment of equity securities	280	373	52	$ 141
Equity securities at fair value	2,523		2,523		$ 2,471
Securities pledged as collateral to secure public deposit and for other purposes	432,800		432,800		354,500
Amortized cost of securities sold under agreements to repurchase	392,300		392,300		$ 386,600
Visa Class B Restricted Stock [Member]
Gains (Loss) on Sales of Securities [Abstract}
Equity securities at fair value	2,500		$ 2,500
Increase in fair market value of equity securities	$ 300	$ 400
Number of equity securities sold (in shares) | Security			0	0