Loans Loans (Analysis of Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021 USD ($) Modifications	Sep. 30, 2020 USD ($) Modifications	Sep. 30, 2021 USD ($) Modifications	Sep. 30, 2020 USD ($) Modifications
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Modifications	1	9	15	18
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 15	$ 4,013	$ 3,383	$ 7,066
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 15	$ 4,013	$ 3,383	$ 7,066
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	0	4	11	10
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 0	$ 795	$ 2,600	$ 2,757
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 0	$ 795	$ 2,600	$ 2,757
Agriculture [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Modifications	0	1	0	2
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 0	$ 2,600	$ 0	$ 3,495
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 0	$ 2,600	$ 0	$ 3,495
One-to-Four Family Residential [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Modifications	1	4	3	6
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 15	$ 618	$ 155	$ 814
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 15	$ 618	$ 155	$ 814

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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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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