Loans Loans (Analysis of Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021 USD ($) Modifications	Jun. 30, 2020 USD ($) Modifications	Jun. 30, 2021 USD ($) Modifications	Jun. 30, 2020 USD ($) Modifications
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Modifications	4	5	14	9
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 1,757	$ 1,818	$ 3,368	$ 3,053
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 1,757	$ 1,818	$ 3,368	$ 3,053
Commercial Real Estate [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Modifications			1	0
Financing Receivable, Troubled Debt Restructuring, Premodification			$ 628	$ 0
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 628	$ 0
Commercial Business [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Modifications	4	4	11	6
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 1,757	$ 1,690	$ 2,600	$ 1,962
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 1,757	$ 1,690	$ 2,600	$ 1,962
Agriculture [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Modifications			0	1
Financing Receivable, Troubled Debt Restructuring, Premodification			$ 0	$ 895
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 0	$ 895
One-to-Four Family Residential [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Modifications	0	1	2	2
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 0	$ 128	$ 140	$ 196
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 0	$ 128	$ 140	$ 196

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

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Amount, before troubled debt restructuring, of financing receivable to be modified.

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