Loans (Schedule for Loans Individually Evaluated for Impairment) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
With No Related Allowance Recorded:
Unpaid Principal Balance	[1]	$ 14,773		$ 14,773		$ 11,275
Recorded Investment		6,020		6,020		7,016
Average Recorded Investment		7,106	$ 3,655	5,702	$ 3,271
Interest Income Recognized		54	40	84	92
Cash Basis Recognized		5	2	7	9
With An Allowance Recorded:
Unpaid Principal Balance	[1]	7,870		7,870		6,757
Recorded Investment		7,049		7,049		6,565
Allowance for Loan Losses Allocated		3,417		3,417		1,826
Average Recorded Investment		7,718	7,287	6,927	8,005
Interest Income Recognized		0	5	0	16
Cash Basis Recognized		3	9	0	9
Unpaid Principal Balance	[1]	22,643		22,643		18,032
Recorded Investment		13,069		13,069		13,581
Average Recorded Investment		14,824	10,942	12,629	11,276
Interest Income Recognized		54	45	84	108
Cash Basis Recognized		8	11	7	18
Loans Acquired With Deteriorated Credit Quality
With No Related Allowance Recorded:
Unpaid Principal Balance	[1]	9,997		9,997		8,060
Recorded Investment		4,083		4,083		3,958
Average Recorded Investment		3,381	995	4,070	697
Interest Income Recognized		43	11	58	11
Cash Basis Recognized		0	0	0	0
With An Allowance Recorded:
Unpaid Principal Balance	[1]	1,134		1,134		196
Recorded Investment		813		813		4
Allowance for Loan Losses Allocated		357		357		3
Average Recorded Investment		815	197	2,083	200
Interest Income Recognized		0	5	0	16
Cash Basis Recognized		0	0	0	0
Commercial and Industrial Loans and Leases
With No Related Allowance Recorded:
Unpaid Principal Balance	[1]	6,381		6,381		3,721
Recorded Investment		1,327		1,327		1,183
Average Recorded Investment		2,868	1,130	1,157	1,152
Interest Income Recognized		8	14	11	40
Cash Basis Recognized		0	2	2	2
With An Allowance Recorded:
Unpaid Principal Balance	[1]	5,628		5,628		2,353
Recorded Investment		5,128		5,128		2,353
Allowance for Loan Losses Allocated		2,440		2,440		143
Average Recorded Investment		5,708	2,594	3,374	3,189
Interest Income Recognized		0	1	0	2
Cash Basis Recognized		0	9	0	9
Commercial Real Estate Loans
With No Related Allowance Recorded:
Unpaid Principal Balance	[1]	5,615		5,615		5,828
Recorded Investment		2,437		2,437		4,383
Average Recorded Investment		2,699	1,988	3,093	1,525
Interest Income Recognized		45	26	72	52
Cash Basis Recognized		5	0	5	7
With An Allowance Recorded:
Unpaid Principal Balance	[1]	2,242		2,242		4,404
Recorded Investment		1,921		1,921		4,212
Allowance for Loan Losses Allocated		977		977		1,683
Average Recorded Investment		2,010	4,693	3,553	4,816
Interest Income Recognized		0	4	0	14
Cash Basis Recognized		3	0	0	0
Agricultural Loans
With No Related Allowance Recorded:
Unpaid Principal Balance	[1]	2,777		2,777		1,726
Recorded Investment		2,256		2,256		1,450
Average Recorded Investment		1,539	537	1,452	594
Interest Income Recognized		1	0	1	0
Cash Basis Recognized		0	0	0	0
With An Allowance Recorded:
Unpaid Principal Balance	[1]	0		0		0
Recorded Investment		0		0		0
Allowance for Loan Losses Allocated		0		0		$ 0
Average Recorded Investment		0	0	0	0
Interest Income Recognized		0	0	0	0
Cash Basis Recognized		$ 0	$ 0	$ 0	$ 0

[1] Unpaid Principal Balance is the remaining contractual payments gross of partial charge-offs and discounts.