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Loans and Allowance for Credit Losses - Recorded Balance of Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	$ 8,689	$ 9,502
Financing Receivable Modifications Performing Recorded Investment	4,103	4,373	$ 4,400
Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	5,975	6,773
Financing Receivable Modifications Performing Recorded Investment	4,031	4,313
Residential Properties | Real Estate Loan | 1-4 Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	1,381	1,603
Financing Receivable Modifications Performing Recorded Investment	1,004	1,268
Commercial | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	4,594	5,170
Financing Receivable Modifications Performing Recorded Investment	3,027	3,045
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	228	228
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	2,362	2,389
Financing Receivable Modifications Performing Recorded Investment	55	58
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	124	112
Financing Receivable Modifications Performing Recorded Investment	$ 17	$ 2

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings and are still accruing interest.

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ 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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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