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Allowance for Loan Losses - Impaired Loans - Average Recorded Investment and Interest Income Recognized (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment | $ 1,145 | $ 1,500 | $ 1,187 | $ 1,888
Interest Income Recognized | 15 | 19 | 31 | 40
Commercial Real Estate Owner Occupied [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment | 178 | 304 | 187 | 529
Interest Income Recognized | 3 | 5 | 6 | 11
Commercial Real Estate Non Owner Occupied [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment |  | 34 |  | 39
Interest Income Recognized |  |  |  | 1
Residential Real Estate [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment | 466 | 563 | 492 | 690
Interest Income Recognized | 6 | 8 | 13 | 16
Farm Real Estate [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment | 501 | 599 | 508 | 605
Interest Income Recognized | $ 6 | $ 6 | $ 12 | 12
Commercial and Agriculture [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment |  |  |  | $ 25

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524 + Details
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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
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