Mortgage Banking (Schedule of Mortgage Servicing) (Details) - USD ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of year		$ 831,000	$ 1,025,000	$ 1,210,000
Capitalized servicing right fees upon sale(1)	[1]	263,000	0	22,000
Amortization charged against mortgage servicing fee income(2)	[2]	(216,000)	(200,000)	(430,000)
Valuation adjustment		(1,000)	(6,000)	(223,000)
Balance at end of year		877,000	831,000	1,025,000
Valuation Allowance:
Balance at beginning of year		(1,000)	(7,000)	(230,000)
(Increase) decrease in impairment reserve		(1,000)	6,000	223,000
Balance at end of year		(2,000)	(1,000)	(7,000)
Fair value, beginning of year		1,677,000	1,766,000	1,701,000
Fair value, end of year		$ 1,496,000	$ 1,677,000	$ 1,766,000

[1] (1)Associated income was reported within mortgage banking income, net on the consolidated statements of income.

[2] (2)Associated amortization expense was reported within mortgage banking income, net on the consolidated statements of income.