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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Credit Quality Risk Rating (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | $ 24,571 | $ 190,301
Year two | 196,312 | 313,863
Year three | 304,894 | 420,211
Year four | 404,396 | 172,168
Year five | 162,893 | 93,413
Prior | 277,827 | 201,004
Revolving | 79,266 | 69,766
Revolving to Term | 0 | 66
Total loans receivable | 1,450,159 | 1,460,792
Current period gross charge-offs, Year one | 0 | 0
Current period gross charge-offs, Year two | 0 | 2
Current period gross charge-offs, Year three | 2 | 21
Current period gross charge-offs, Year four | 0 | 43
Current period gross charge-offs, Year five | 0 | 3
Current period gross charge-offs, Prior | 1 | 91
Current period gross charge-offs, Revolving | 2 | 0
Current period gross charge-offs, Revolving to Term | 0 | 0
Current period gross charge-offs, Total | 5 | 160
Commercial/Agricultural Real Estate | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 12,070 | 73,898
Year two | 73,823 | 134,279
Year three | 135,698 | 249,497
Year four | 241,457 | 95,429
Year five | 94,949 | 71,287
Prior | 175,179 | 113,853
Revolving | 10,454 | 10,204
Revolving to Term | 0 | 0
Total loans receivable | 743,630 | 748,447
Current period gross charge-offs, Year one | 0 | 0
Current period gross charge-offs, Year two | 0 | 0
Current period gross charge-offs, Year three | 0 | 10
Current period gross charge-offs, Year four | 0 | 0
Current period gross charge-offs, Year five | 0 | 0
Current period gross charge-offs, Prior | 0 | 4
Current period gross charge-offs, Revolving | 0 | 0
Current period gross charge-offs, Revolving to Term | 0 | 0
Current period gross charge-offs, Total | 0 | 14
Commercial/Agricultural Real Estate | Agricultural real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 655 | 16,335
Year two | 14,412 | 19,557
Year three | 18,763 | 16,991
Year four | 16,729 | 7,719
Year five | 7,663 | 5,646
Prior | 20,982 | 15,900
Revolving | 1,063 | 1,009
Revolving to Term | 0 | 0
Total loans receivable | 80,267 | 83,157
Current period gross charge-offs, Year one | 0 | 0
Current period gross charge-offs, Year two | 0 | 0
Current period gross charge-offs, Year three | 0 | 0
Current period gross charge-offs, Year four | 0 | 32
Current period gross charge-offs, Year five | 0 | 0
Current period gross charge-offs, Prior | 0 | 0
Current period gross charge-offs, Revolving | 0 | 0
Current period gross charge-offs, Revolving to Term | 0 | 0
Current period gross charge-offs, Total | 0 | 32
Commercial/Agricultural Real Estate | Multi-family real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 2,085 | 5,016
Year two | 5,143 | 50,617
Year three | 50,345 | 95,686
Year four | 103,831 | 45,685
Year five | 45,318 | 8,591
Prior | 28,500 | 22,364
Revolving | 96 | 45
Revolving to Term | 0 | 0
Total loans receivable | 235,318 | 228,004
Current period gross charge-offs, Year one | 0 | 0
Current period gross charge-offs, Year two | 0 | 0
Current period gross charge-offs, Year three | 0 | 0
Current period gross charge-offs, Year four | 0 | 0
Current period gross charge-offs, Year five | 0 | 0
Current period gross charge-offs, Prior | 0 | 0
Current period gross charge-offs, Revolving | 0 | 0
Current period gross charge-offs, Revolving to Term | 0 | 0
Current period gross charge-offs, Total | 0 | 0
Commercial/Agricultural Real Estate | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 1,814 | 42,639
Year two | 50,215 | 37,783
Year three | 30,065 | 18,912
Year four | 6,169 | 8,014
Year five | 1,368 | 119
Prior | 1,337 | 1,288
Revolving | 2,087 | 1,463
Revolving to Term | 0 | 0
Total loans receivable | 93,055 | 110,218
Current period gross charge-offs, Year one | 0 | 0
Current period gross charge-offs, Year two | 0 | 0
Current period gross charge-offs, Year three | 0 | 0
Current period gross charge-offs, Year four | 0 | 0
Current period gross charge-offs, Year five | 0 | 0
Current period gross charge-offs, Prior | 0 | 0
Current period gross charge-offs, Revolving | 0 | 0
Current period gross charge-offs, Revolving to Term | 0 | 0
Current period gross charge-offs, Total | 0 | 0
C&I/Agricultural operating: | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 3,227 | 16,758
Year two | 15,970 | 31,915
Year three | 31,585 | 28,059
Year four | 26,230 | 11,406
Year five | 10,087 | 4,751
Prior | 6,115 | 2,025
Revolving | 34,797 | 26,259
Revolving to Term | 0 | 17
Total loans receivable | 128,011 | 121,190
Current period gross charge-offs, Year one | 0 | 0
Current period gross charge-offs, Year two | 0 | 0
Current period gross charge-offs, Year three | 0 | 0
Current period gross charge-offs, Year four | 0 | 0
Current period gross charge-offs, Year five | 0 | 0
Current period gross charge-offs, Prior | 0 | 0
Current period gross charge-offs, Revolving | 0 | 0
Current period gross charge-offs, Revolving to Term | 0 | 0
Current period gross charge-offs, Total | 0 | 0
C&I/Agricultural operating: | Agricultural operating |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 1,499 | 4,734
Year two | 4,391 | 4,384
Year three | 3,989 | 1,560
Year four | 1,422 | 746
Year five | 688 | 295
Prior | 2,307 | 2,145
Revolving | 11,948 | 11,831
Revolving to Term | 0 | 0
Total loans receivable | 26,244 | 25,695
Current period gross charge-offs, Year one | 0 | 0
Current period gross charge-offs, Year two | 0 | 0
Current period gross charge-offs, Year three | 0 | 0
Current period gross charge-offs, Year four | 0 | 0
Current period gross charge-offs, Year five | 0 | 0
Current period gross charge-offs, Prior | 0 | 0
Current period gross charge-offs, Revolving | 0 | 0
Current period gross charge-offs, Revolving to Term | 0 | 0
Current period gross charge-offs, Total | 0 | 0
Residential mortgage: | Residential mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 2,793 | 28,808
Year two | 30,478 | 33,801
Year three | 33,142 | 8,743
Year four | 7,933 | 2,610
Year five | 2,326 | 2,306
Prior | 37,033 | 36,619
Revolving | 15,434 | 15,544
Revolving to Term | 0 | 48
Total loans receivable | 129,139 | 128,479
Current period gross charge-offs, Year one | 0 | 0
Current period gross charge-offs, Year two | 0 | 0
Current period gross charge-offs, Year three | 0 | 10
Current period gross charge-offs, Year four | 0 | 0
Current period gross charge-offs, Year five | 0 | 0
Current period gross charge-offs, Prior | 0 | 68
Current period gross charge-offs, Revolving | 0 | 0
Current period gross charge-offs, Revolving to Term | 0 | 0
Current period gross charge-offs, Total | 0 | 78
Residential mortgage: | Purchased HELOC loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 0 | 0
Revolving | 2,895 | 2,880
Revolving to Term | 0 | 0
Total loans receivable | 2,895 | 2,880
Current period gross charge-offs, Year one | 0 | 0
Current period gross charge-offs, Year two | 0 | 0
Current period gross charge-offs, Year three | 0 | 0
Current period gross charge-offs, Year four | 0 | 0
Current period gross charge-offs, Year five | 0 | 0
Current period gross charge-offs, Prior | 0 | 0
Current period gross charge-offs, Revolving | 0 | 0
Current period gross charge-offs, Revolving to Term | 0 | 0
Current period gross charge-offs, Total | 0 | 0
Consumer installment: | Originated indirect paper |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 5,851 | 6,535
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 5,851 | 6,535
Current period gross charge-offs, Year one | 0 | 0
Current period gross charge-offs, Year two | 0 | 0
Current period gross charge-offs, Year three | 0 | 0
Current period gross charge-offs, Year four | 0 | 0
Current period gross charge-offs, Year five | 0 | 0
Current period gross charge-offs, Prior | 1 | 13
Current period gross charge-offs, Revolving | 0 | 0
Current period gross charge-offs, Revolving to Term | 0 | 0
Current period gross charge-offs, Total | 1 | 13
Consumer installment: | Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 428 | 2,113
Year two | 1,880 | 1,527
Year three | 1,307 | 763
Year four | 625 | 559
Year five | 494 | 418
Prior | 523 | 275
Revolving | 492 | 531
Revolving to Term | 0 | 1
Total loans receivable | 5,749 | 6,187
Current period gross charge-offs, Year one | 0 | 0
Current period gross charge-offs, Year two | 0 | 2
Current period gross charge-offs, Year three | 2 | 1
Current period gross charge-offs, Year four | 0 | 11
Current period gross charge-offs, Year five | 0 | 3
Current period gross charge-offs, Prior | 0 | 6
Current period gross charge-offs, Revolving | 2 | 0
Current period gross charge-offs, Revolving to Term | 0 | 0
Current period gross charge-offs, Total | 4 | 23
Risk rating 1 to 5 | Commercial/Agricultural Real Estate | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 12,070 | 73,564
Year two | 73,515 | 133,583
Year three | 135,002 | 236,774
Year four | 233,638 | 90,881
Year five | 94,729 | 71,104
Prior | 170,326 | 107,999
Revolving | 10,454 | 10,204
Revolving to Term | 0 | 0
Total loans receivable | 729,734 | 724,109
Risk rating 1 to 5 | Commercial/Agricultural Real Estate | Agricultural real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 655 | 16,335
Year two | 14,412 | 19,026
Year three | 18,239 | 11,582
Year four | 11,371 | 7,719
Year five | 7,663 | 5,463
Prior | 20,339 | 15,418
Revolving | 1,063 | 1,009
Revolving to Term | 0 | 0
Total loans receivable | 73,742 | 76,552
Risk rating 1 to 5 | Commercial/Agricultural Real Estate | Multi-family real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 2,085 | 5,016
Year two | 5,143 | 50,617
Year three | 50,345 | 95,686
Year four | 103,831 | 45,685
Year five | 45,318 | 8,591
Prior | 28,500 | 22,364
Revolving | 96 | 45
Revolving to Term | 0 | 0
Total loans receivable | 235,318 | 228,004
Risk rating 1 to 5 | Commercial/Agricultural Real Estate | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 1,814 | 42,639
Year two | 50,215 | 37,783
Year three | 30,065 | 18,912
Year four | 6,169 | 8,014
Year five | 1,368 | 119
Prior | 1,228 | 1,124
Revolving | 1,938 | 1,314
Revolving to Term | 0 | 0
Total loans receivable | 92,797 | 109,905
Risk rating 1 to 5 | C&I/Agricultural operating: | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 3,227 | 16,758
Year two | 15,954 | 31,915
Year three | 31,585 | 28,059
Year four | 25,779 | 11,406
Year five | 10,087 | 4,746
Prior | 6,111 | 2,023
Revolving | 32,497 | 24,059
Revolving to Term | 0 | 0
Total loans receivable | 125,240 | 118,966
Risk rating 1 to 5 | C&I/Agricultural operating: | Agricultural operating |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 1,499 | 4,734
Year two | 4,391 | 3,908
Year three | 3,516 | 856
Year four | 789 | 746
Year five | 688 | 295
Prior | 2,307 | 2,144
Revolving | 11,948 | 11,831
Revolving to Term | 0 | 0
Total loans receivable | 25,138 | 24,514
Risk rating 1 to 5 | Residential mortgage: | Residential mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 2,793 | 28,808
Year two | 30,478 | 33,660
Year three | 33,007 | 8,743
Year four | 7,933 | 2,610
Year five | 2,326 | 2,292
Prior | 34,157 | 33,744
Revolving | 15,434 | 15,544
Revolving to Term | 0 | 0
Total loans receivable | 126,128 | 125,401
Risk rating 1 to 5 | Residential mortgage: | Purchased HELOC loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 0 | 0
Revolving | 2,895 | 2,880
Revolving to Term | 0 | 0
Total loans receivable | 2,895 | 2,880
Risk rating 1 to 5 | Consumer installment: | Originated indirect paper |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 5,805 | 6,491
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 5,805 | 6,491
Risk rating 1 to 5 | Consumer installment: | Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 428 | 2,104
Year two | 1,873 | 1,525
Year three | 1,306 | 763
Year four | 625 | 559
Year five | 494 | 402
Prior | 522 | 274
Revolving | 491 | 530
Revolving to Term | 0 | 1
Total loans receivable | 5,739 | 6,158
Risk rating 6 | Commercial/Agricultural Real Estate | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 309
Year two | 0 | 0
Year three | 0 | 9,510
Year four | 4,416 | 0
Year five | 0 | 0
Prior | 0 | 0
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 4,416 | 9,819
Risk rating 6 | Commercial/Agricultural Real Estate | Agricultural real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 171
Year three | 170 | 5,409
Year four | 5,358 | 0
Year five | 0 | 152
Prior | 614 | 482
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 6,142 | 6,214
Risk rating 6 | Commercial/Agricultural Real Estate | Multi-family real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 0 | 0
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 0 | 0
Risk rating 6 | Commercial/Agricultural Real Estate | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 109 | 110
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 109 | 110
Risk rating 6 | C&I/Agricultural operating: | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 14 | 0
Year five | 0 | 5
Prior | 0 | 0
Revolving | 2,300 | 2,200
Revolving to Term | 0 | 0
Total loans receivable | 2,314 | 2,205
Risk rating 6 | C&I/Agricultural operating: | Agricultural operating |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 0 | 0
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 0 | 0
Risk rating 7 | Commercial/Agricultural Real Estate | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 25
Year two | 308 | 696
Year three | 696 | 3,213
Year four | 3,403 | 4,548
Year five | 220 | 183
Prior | 4,853 | 5,854
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 9,480 | 14,519
Risk rating 7 | Commercial/Agricultural Real Estate | Agricultural real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 360
Year three | 354 | 0
Year four | 0 | 0
Year five | 0 | 31
Prior | 29 | 0
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 383 | 391
Risk rating 7 | Commercial/Agricultural Real Estate | Multi-family real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 0 | 0
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 0 | 0
Risk rating 7 | Commercial/Agricultural Real Estate | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 0 | 54
Revolving | 149 | 149
Revolving to Term | 0 | 0
Total loans receivable | 149 | 203
Risk rating 7 | C&I/Agricultural operating: | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 16 | 0
Year three | 0 | 0
Year four | 437 | 0
Year five | 0 | 0
Prior | 4 | 2
Revolving | 0 | 0
Revolving to Term | 0 | 17
Total loans receivable | 457 | 19
Risk rating 7 | C&I/Agricultural operating: | Agricultural operating |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 476
Year three | 473 | 704
Year four | 633 | 0
Year five | 0 | 0
Prior | 0 | 1
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 1,106 | 1,181
Risk rating 7 | Residential mortgage: | Residential mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 141
Year three | 135 | 0
Year four | 0 | 0
Year five | 0 | 14
Prior | 2,876 | 2,875
Revolving | 0 | 0
Revolving to Term | 0 | 48
Total loans receivable | 3,011 | 3,078
Risk rating 7 | Residential mortgage: | Purchased HELOC loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 0 | 0
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 0 | 0
Risk rating 7 | Consumer installment: | Originated indirect paper |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
Prior | 46 | 44
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans receivable | 46 | 44
Risk rating 7 | Consumer installment: | Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Year one | 0 | 9
Year two | 7 | 2
Year three | 1 | 0
Year four | 0 | 0
Year five | 0 | 16
Prior | 1 | 1
Revolving | 1 | 1
Revolving to Term | 0 | 0
Total loans receivable | $ 10 | $ 29

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