Loans (Schedule of Contractually Required Payments on Acquired Loans) (Details) - Loans Acquired with Deteriorated Credit Quality - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	$ 13,819	$ 0
Cash Flows Expected to be Collected at Acquisition	8,802	0
Fair Value of Acquired Loans at Acquisition	7,702	0
Commercial and Industrial Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	4,245	0
Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	7,103	0
Agricultural Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	1,095	0
Home Equity Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	565	0
Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	11	0
Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	$ 800	$ 0

Fair value at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

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Amount of cash flows expected to be collected at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

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Amount of contractually required payments receivable at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538

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