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Loans Receivable and Allowance for Loan Losses (Composition of the Loan Portfolio) (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans | $ 1,372,492 | $ 1,356,040 |  |
Deferred fees, net | (847) | (1,109) |  |
Total loans receivable | 1,371,645 | 1,354,931 |  |
Allowance for loan losses | (16,660) | (16,442) | $ (14,509) | $ (13,150)
Net loans receivable | $ 1,354,985 | $ 1,338,489 |  |
Percent of Loans | 100.00% | 100.00% |  |
Residential Real Estate Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans | $ 276,592 | $ 273,040 |  |
Allowance for loan losses | $ (2,326) | $ (2,175) | (2,124) | (1,960)
Percent of Loans | 20.20% | 20.10% |  |
Commercial Real Estate Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans | $ 641,581 | $ 628,724 |  |
Allowance for loan losses | $ (10,287) | $ (10,878) | (9,084) | (8,004)
Percent of Loans | 46.70% | 46.40% |  |
Agricultural Real Estate Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans | $ 64,153 | $ 61,925 |  |
Percent of Loans | 4.70% | 4.60% |  |
Construction Real Estate Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans | $ 19,407 | $ 21,990 |  |
Allowance for loan losses | $ (134) | $ (133) | (122) | (150)
Percent of Loans | 1.40% | 1.60% |  |
Commercial [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans | $ 183,212 | $ 186,031 |  |
Allowance for loan losses | $ (1,495) | $ (1,490) | (1,405) | (1,360)
Percent of Loans | 13.30% | 13.70% |  |
Other Agricultural Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans | $ 36,729 | $ 37,930 |  |
Percent of Loans | 2.70% | 2.80% |  |
Consumer Loans To Individuals [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans | $ 150,818 | $ 146,400 |  |
Allowance for loan losses | $ (1,622) | $ (1,766) | $ (1,774) | $ (1,676)
Percent of Loans | 11.00% | 10.80% |  |

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