Loans Loans (Analysis of Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($) Modifications	Mar. 31, 2020 USD ($) Modifications
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| Modifications	10	4
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 1,611	$ 1,235
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 1,611	$ 1,235
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	7	2
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 843	$ 272
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 843	$ 272
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	2	1
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 140	$ 68
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 140	$ 68

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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=121611835&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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