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LOANS, ALLOWANCE FOR LOAN LOSSES AND IMPAIRED LOANS - Impaired Financing Receivables (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Bank impaired loans |  |
With no related allowance recorded, Recorded investment | $ 19,076 | $ 25,151
With an allowance recorded, Recorded investment | 7,747 | 6,589
Recorded investment, Total | 26,823 | 31,740
With no related allowance recorded, unpaid principal balance | 19,172 | 25,804
With an allowance recorded, unpaid principal balance | 7,747 | 6,589
Unpaid principal balance, Total | 26,919 | 32,393
Impaired Financing Receivable, Related Allowance | 826 | 1,009
With no related allowance recorded, Average recorded investment | 24,735 | 31,656
With an allowance recorded, Average recorded investment | 6,601 | 5,372
Average recorded investment, Total | 31,336 | 37,028
With no related allowance recorded, Interest income recognized | 1,030 | 1,511
With an allowance recorded, Interest income recognized | 388 | 163
Interest income recognized, Total | 1,418 | 1,674
Commercial/Agricultural real estate: |  |
Bank impaired loans |  |
With no related allowance recorded, Recorded investment | 9,741 | 15,521
With an allowance recorded, Recorded investment | 7,108 | 5,887
Recorded investment, Total | 16,849 | 21,408
With no related allowance recorded, unpaid principal balance | 9,766 | 15,905
With an allowance recorded, unpaid principal balance | 7,108 | 5,887
Unpaid principal balance, Total | 16,874 | 21,792
Impaired Financing Receivable, Related Allowance | 519 | 797
With no related allowance recorded, Average recorded investment | 13,657 | 19,412
With an allowance recorded, Average recorded investment | 6,028 | 4,089
Average recorded investment, Total | 19,685 | 23,501
With no related allowance recorded, Interest income recognized | 549 | 964
With an allowance recorded, Interest income recognized | 273 | 62
Interest income recognized, Total | 822 | 1,026
C&I/Agricultural operating: |  |
Bank impaired loans |  |
With no related allowance recorded, Recorded investment | 2,744 | 3,153
With an allowance recorded, Recorded investment | 538 | 0
Recorded investment, Total | 3,282 | 3,153
With no related allowance recorded, unpaid principal balance | 2,754 | 3,337
With an allowance recorded, unpaid principal balance | 538 | 0
Unpaid principal balance, Total | 3,292 | 3,337
Impaired Financing Receivable, Related Allowance | 249 | 99
With no related allowance recorded, Average recorded investment | 4,467 | 4,622
With an allowance recorded, Average recorded investment | 273 | 391
Average recorded investment, Total | 4,741 | 5,013
With no related allowance recorded, Interest income recognized | 200 | 146
With an allowance recorded, Interest income recognized | 48 | 84
Interest income recognized, Total | 248 | 230
Residential mortgage: |  |
Bank impaired loans |  |
With no related allowance recorded, Recorded investment | 5,846 | 6,221
With an allowance recorded, Recorded investment | 91 | 701
Recorded investment, Total | 5,937 | 6,922
With no related allowance recorded, unpaid principal balance | 5,907 | 6,306
With an allowance recorded, unpaid principal balance | 91 | 701
Unpaid principal balance, Total | 5,998 | 7,007
Impaired Financing Receivable, Related Allowance | 48 | 113
With no related allowance recorded, Average recorded investment | 6,304 | 7,316
With an allowance recorded, Average recorded investment | 298 | 890
Average recorded investment, Total | 6,603 | 8,206
With no related allowance recorded, Interest income recognized | 276 | 316
With an allowance recorded, Interest income recognized | 65 | 17
Interest income recognized, Total | 341 | 333
Consumer installment: |  |
Bank impaired loans |  |
With no related allowance recorded, Recorded investment | 745 | 256
With an allowance recorded, Recorded investment | 10 | 1
Recorded investment, Total | 755 | 257
With no related allowance recorded, unpaid principal balance | 745 | 256
With an allowance recorded, unpaid principal balance | 10 | 1
Unpaid principal balance, Total | 755 | 257
Impaired Financing Receivable, Related Allowance | 10 | 0
With no related allowance recorded, Average recorded investment | 307 | 306
With an allowance recorded, Average recorded investment | 2 | 2
Average recorded investment, Total | 310 | 308
With no related allowance recorded, Interest income recognized | 5 | 85
With an allowance recorded, Interest income recognized | 2 | 0
Interest income recognized, Total | $ 7 | $ 85

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