Loans (Schedule of Loans Individually Evaluated for Impairment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
With No Related Allowance Recorded:
Unpaid Principal Balance	$ 1,465	[1]	$ 3,831	[2]
Recorded Investment	941		3,324
Average Recorded Investment	1,738		4,571		$ 4,863
Interest Income Recognized	134		216		279
Cash Basis Recognized	133		216		297
With An Allowance Recorded:
Unpaid Principal Balance	3,610	[1]	3,737	[2]
Recorded Investment	3,494		3,062
Allowance for Loan Losses Allocated	1,202		1,542
Average Recorded Investment	4,566		4,296		6,784
Interest Income Recognized	94		22		25
Cash Basis Recognized	92		18		21
Unpaid Principal Balance	5,075	[1]	7,568	[2]
Recorded Investment	4,435		6,386
Average Recorded Investment	6,304		8,867		11,647
Interest Income Recognized	228		238		304
Cash Basis Recognized	225		234		318
Commercial and Industrial Loans and Leases
With No Related Allowance Recorded:
Unpaid Principal Balance	161	[1]	1,887	[2]
Recorded Investment	161		1,877
Average Recorded Investment	447		2,082		1,192
Interest Income Recognized	29		132		65
Cash Basis Recognized	29		135		65
With An Allowance Recorded:
Unpaid Principal Balance	1,403	[1]	84	[2]
Recorded Investment	1,417		87
Allowance for Loan Losses Allocated	106		87
Average Recorded Investment	1,726		1,222		1,360
Interest Income Recognized	89		2		3
Cash Basis Recognized	89		2		3
Commercial Real Estate Loans
With No Related Allowance Recorded:
Unpaid Principal Balance	1,292	[1]	1,944	[2]
Recorded Investment	768		1,447
Average Recorded Investment	1,282		2,489		2,251
Interest Income Recognized	104		84		5
Cash Basis Recognized	103		81		7
With An Allowance Recorded:
Unpaid Principal Balance	2,207	[1]	3,653	[2]
Recorded Investment	2,077		2,975
Allowance for Loan Losses Allocated	1,096		1,455
Average Recorded Investment	2,840		3,074		5,424
Interest Income Recognized	5		20		22
Cash Basis Recognized	3		16		18
Agricultural Loans
With No Related Allowance Recorded:
Unpaid Principal Balance	12	[1]	0	[2]
Recorded Investment	12		0
Average Recorded Investment	9		0		1,420
Interest Income Recognized	1		0		209
Cash Basis Recognized	1		0		225
With An Allowance Recorded:
Unpaid Principal Balance	0	[1]	0	[2]
Recorded Investment	0		0
Allowance for Loan Losses Allocated	0		0
Average Recorded Investment	0		0		0
Interest Income Recognized	0		0		0
Cash Basis Recognized	0		0		0
Loans Acquired With Deteriorated Credit Quality
With No Related Allowance Recorded:
Unpaid Principal Balance	528	[1]	289	[2]
Recorded Investment	0		133
Average Recorded Investment	196		421		30
Interest Income Recognized	0		5		3
Cash Basis Recognized	0		5		3
With An Allowance Recorded:
Unpaid Principal Balance	0	[1]	759	[2]
Recorded Investment	0		209
Allowance for Loan Losses Allocated	0		10
Average Recorded Investment	0		328		142
Interest Income Recognized	0		0		2
Cash Basis Recognized	$ 0		$ 0		$ 2

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

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