LOANS AND ALLOWANCE FOR CREDIT LOSSES - Outstanding loan balances by loan class prior to allocation of net deferred fees and costs (Details) - USD ($) |
Jun. 30, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|---|---|---|
| Financing Receivable, Recorded Investment [Line Items] | ||||||
| Subtotal: Total Loans | $ 958,935,000 | $ 946,826,000 | ||||
| Net Deferred Fees and Costs | 731,000 | 888,000 | ||||
| Subtotal: Total Loans Held for Investment | 959,666,000 | 947,714,000 | ||||
| Loans held for sale | 104,000 | 737,000 | ||||
| Allowance for credit losses | (7,762,000) | $ (8,068,000) | (7,672,000) | $ (7,687,000) | $ (7,196,000) | $ (6,925,000) |
| Net loans | 952,008,000 | 940,779,000 | ||||
| Real Estate | ||||||
| Financing Receivable, Recorded Investment [Line Items] | ||||||
| Subtotal: Total Loans | 864,608,000 | 850,656,000 | ||||
| Loans held for sale | 104,000 | 737,000 | ||||
| Allowance for credit losses | (7,293,000) | (7,572,000) | (7,215,000) | (7,206,000) | (6,725,000) | (6,539,000) |
| Agricultural | ||||||
| Financing Receivable, Recorded Investment [Line Items] | ||||||
| Subtotal: Total Loans | 1,108,000 | 936,000 | ||||
| Allowance for credit losses | (3,000) | (2,000) | (2,000) | (2,000) | (1,000) | (1,000) |
| Commercial and Industrial | ||||||
| Financing Receivable, Recorded Investment [Line Items] | ||||||
| Subtotal: Total Loans | 64,908,000 | 66,706,000 | ||||
| Allowance for credit losses | (329,000) | (341,000) | (313,000) | (325,000) | (322,000) | (265,000) |
| Consumer | ||||||
| Financing Receivable, Recorded Investment [Line Items] | ||||||
| Subtotal: Total Loans | 6,295,000 | 6,390,000 | ||||
| Allowance for credit losses | (84,000) | (94,000) | (98,000) | (91,000) | (85,000) | (78,000) |
| State and Political Subdivisions | ||||||
| Financing Receivable, Recorded Investment [Line Items] | ||||||
| Subtotal: Total Loans | 22,016,000 | 22,138,000 | ||||
| Allowance for credit losses | $ (53,000) | $ (59,000) | $ (44,000) | $ (63,000) | $ (63,000) | $ (42,000) |