Mortgage Banking (Schedule of Mortgage Servicing) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of year	$ 877	$ 831	$ 1,025
Capitalized servicing right fees upon sale(1)	1,763	263	0
Amortization charged against mortgage servicing fee income(2)	(419)	(216)	(200)
Valuation adjustment	(25)	1	(6)
Balance at end of year	2,196	877	831
Valuation Allowance:
Balance at beginning of year	(2)	(1)	(7)
(Increase) decrease in impairment reserve	(25)	(1)	6
Balance at end of year	(27)	(2)	(1)
Fair value, beginning of year	1,496	1,677	1,766
Fair value, end of year	$ 2,447	$ 1,496	$ 1,677