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Loans and Allowance for Credit Losses - Internal Risk Rating Summary (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Total commercial business loans |  |  |
2024 | $ 62,883 |  | $ 301,566
2023 | 327,448 |  | 927,564
2022 | 888,319 |  | 459,305
2021 | 445,329 |  | 143,841
2020 | 105,844 |  | 96,656
Prior | 331,101 |  | 256,790
Revolving Loans Amortized Cost Basis | 105,267 |  | 130,452
Revolving Loans Converted to Term | 0 |  | 0
Total | 2,266,191 |  | 2,316,174
Gross charge-offs |  |  |
2024 | 0 |  | 1,144
2023 | 189 |  | 10,836
2022 | 1,447 |  | 3,003
2021 | 147 |  | 141
2020 | 0 |  | 19
Prior | 367 |  | 3,336
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 2,150 | $ 4,847 | 18,479
Total commercial |  |  |
Total commercial business loans |  |  |
Total | 1,567,697 |  | 1,601,688
Gross charge-offs |  |  |
Total | 981 | 141 |
Total commercial | Business |  |  |
Total commercial business loans |  |  |
2024 | 11,058 |  | 177,667
2023 | 149,749 |  | 286,617
2022 | 262,240 |  | 93,739
2021 | 72,765 |  | 66,058
2020 | 31,428 |  | 55,744
Prior | 128,999 |  | 96,960
Revolving Loans Amortized Cost Basis | 86,130 |  | 20,315
Revolving Loans Converted to Term | 0 |  | 0
Total | 742,369 |  | 797,100
Gross charge-offs |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 228
2022 | 614 |  | 1,250
2021 | 0 |  | 141
2020 | 0 |  | 0
Prior | 367 |  | 2,953
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 981 | 141 | 4,572
Total commercial | Real estate |  |  |
Total commercial business loans |  |  |
2024 | 37,733 |  | 80,553
2023 | 112,029 |  | 149,189
2022 | 134,778 |  | 213,612
2021 | 217,187 |  | 11,952
2020 | 11,813 |  | 32,517
Prior | 167,009 |  | 131,522
Revolving Loans Amortized Cost Basis | 518 |  | 51,239
Revolving Loans Converted to Term | 0 |  | 0
Total | 681,067 |  | 670,584
Gross charge-offs |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
2020 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 | 0 | 0
Total commercial | Acquisition, development and construction |  |  |
Total commercial business loans |  |  |
2024 | 5,146 |  | 6,546
2023 | 6,592 |  | 54,170
2022 | 56,763 |  | 44,187
2021 | 45,204 |  | 22,041
2020 | 23,656 |  | 0
Prior | 4,400 |  | 2,237
Revolving Loans Amortized Cost Basis | 2,500 |  | 4,823
Revolving Loans Converted to Term | 0 |  | 0
Total | 144,261 |  | 134,004
Gross charge-offs |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
2020 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 | 0 | 0
Residential real estate |  |  |
Total commercial business loans |  |  |
2024 | 8,946 |  | 33,867
2023 | 56,959 |  | 414,454
2022 | 417,220 |  | 100,177
2021 | 104,920 |  | 42,475
2020 | 38,947 |  | 7,866
Prior | 30,627 |  | 22,893
Revolving Loans Amortized Cost Basis | 2,825 |  | 50,815
Revolving Loans Converted to Term | 0 |  | 0
Total | 660,444 |  | 672,547
Gross charge-offs |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
2020 | 0 |  | 19
Prior | 0 |  | 381
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 | 22 | 400
Home equity lines of credit |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 638
2023 | 58 |  | 3,942
2022 | 36 |  | 1,779
2021 | 0 |  | 1,306
2020 | 0 |  | 501
Prior | 11 |  | 3,125
Revolving Loans Amortized Cost Basis | 13,264 |  | 3,240
Revolving Loans Converted to Term | 0 |  | 0
Total | 13,369 |  | 14,531
Gross charge-offs |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
2020 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 | 0 | 0
Consumer |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 2,295
2023 | 2,061 |  | 19,192
2022 | 17,282 |  | 5,811
2021 | 5,253 |  | 9
2020 | 0 |  | 28
Prior | 55 |  | 53
Revolving Loans Amortized Cost Basis | 30 |  | 20
Revolving Loans Converted to Term | 0 |  | 0
Total | 24,681 |  | 27,408
Gross charge-offs |  |  |
2024 | 0 |  | 1,144
2023 | 189 |  | 10,608
2022 | 833 |  | 1,753
2021 | 147 |  | 0
2020 | 0 |  | 0
Prior | 0 |  | 2
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 1,169 | $ 4,684 | 13,507
Pass |  |  |
Total commercial business loans |  |  |
2024 | 62,883 |  | 300,188
2023 | 326,177 |  | 890,814
2022 | 856,203 |  | 431,438
2021 | 402,882 |  | 138,327
2020 | 100,564 |  | 85,038
Prior | 282,918 |  | 217,610
Revolving Loans Amortized Cost Basis | 103,903 |  | 130,366
Revolving Loans Converted to Term | 0 |  | 0
Total | 2,135,530 |  | 2,193,781
Pass | Total commercial | Business |  |  |
Total commercial business loans |  |  |
2024 | 11,058 |  | 176,309
2023 | 148,499 |  | 251,265
2022 | 230,313 |  | 92,307
2021 | 71,110 |  | 64,964
2020 | 30,347 |  | 50,765
Prior | 119,528 |  | 90,355
Revolving Loans Amortized Cost Basis | 85,322 |  | 20,315
Revolving Loans Converted to Term | 0 |  | 0
Total | 696,177 |  | 746,280
Pass | Total commercial | Real estate |  |  |
Total commercial business loans |  |  |
2024 | 37,733 |  | 80,553
2023 | 112,029 |  | 149,189
2022 | 134,778 |  | 205,651
2021 | 191,268 |  | 11,952
2020 | 11,813 |  | 26,438
Prior | 131,047 |  | 101,322
Revolving Loans Amortized Cost Basis | 518 |  | 51,239
Revolving Loans Converted to Term | 0 |  | 0
Total | 619,186 |  | 626,344
Pass | Total commercial | Acquisition, development and construction |  |  |
Total commercial business loans |  |  |
2024 | 5,146 |  | 6,546
2023 | 6,592 |  | 54,170
2022 | 56,763 |  | 29,535
2021 | 30,552 |  | 22,041
2020 | 23,656 |  | 0
Prior | 3,692 |  | 1,483
Revolving Loans Amortized Cost Basis | 2,500 |  | 4,823
Revolving Loans Converted to Term | 0 |  | 0
Total | 128,901 |  | 118,598
Pass | Residential real estate |  |  |
Total commercial business loans |  |  |
2024 | 8,946 |  | 33,867
2023 | 56,959 |  | 413,466
2022 | 417,220 |  | 96,413
2021 | 104,709 |  | 38,169
2020 | 34,748 |  | 7,306
Prior | 28,585 |  | 21,313
Revolving Loans Amortized Cost Basis | 2,705 |  | 50,815
Revolving Loans Converted to Term | 0 |  | 0
Total | 653,872 |  | 661,349
Pass | Home equity lines of credit |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 638
2023 | 58 |  | 3,798
2022 | 36 |  | 1,779
2021 | 0 |  | 1,192
2020 | 0 |  | 501
Prior | 11 |  | 3,084
Revolving Loans Amortized Cost Basis | 12,828 |  | 3,154
Revolving Loans Converted to Term | 0 |  | 0
Total | 12,933 |  | 14,146
Pass | Consumer |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 2,275
2023 | 2,040 |  | 18,926
2022 | 17,093 |  | 5,753
2021 | 5,243 |  | 9
2020 | 0 |  | 28
Prior | 55 |  | 53
Revolving Loans Amortized Cost Basis | 30 |  | 20
Revolving Loans Converted to Term | 0 |  | 0
Total | 24,461 |  | 27,064
Special Mention |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 990
2023 | 0 |  | 32,403
2022 | 29,776 |  | 22,685
2021 | 26,104 |  | 5,090
2020 | 4,935 |  | 6,832
Prior | 22,405 |  | 15,717
Revolving Loans Amortized Cost Basis | 271 |  | 86
Revolving Loans Converted to Term | 0 |  | 0
Total | 83,491 |  | 83,803
Special Mention | Total commercial | Business |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 990
2023 | 0 |  | 32,342
2022 | 29,776 |  | 72
2021 | 185 |  | 830
2020 | 817 |  | 339
Prior | 4,094 |  | 3,767
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 34,872 |  | 38,340
Special Mention | Total commercial | Real estate |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 7,961
2021 | 25,919 |  | 0
2020 | 0 |  | 6,079
Prior | 17,150 |  | 11,201
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 43,069 |  | 25,241
Special Mention | Total commercial | Acquisition, development and construction |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 14,652
2021 | 0 |  | 0
2020 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 |  | 14,652
Special Mention | Residential real estate |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 4,224
2020 | 4,118 |  | 414
Prior | 1,161 |  | 708
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 5,279 |  | 5,346
Special Mention | Home equity lines of credit |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 61
2022 | 0 |  | 0
2021 | 0 |  | 36
2020 | 0 |  | 0
Prior | 0 |  | 41
Revolving Loans Amortized Cost Basis | 271 |  | 86
Revolving Loans Converted to Term | 0 |  | 0
Total | 271 |  | 224
Special Mention | Consumer |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
2020 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 |  | 0
Substandard |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 388
2023 | 1,271 |  | 2,325
2022 | 1,416 |  | 4,343
2021 | 15,353 |  | 160
2020 | 81 |  | 4,786
Prior | 24,656 |  | 21,966
Revolving Loans Amortized Cost Basis | 1,093 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 43,870 |  | 33,968
Substandard | Total commercial | Business |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 368
2023 | 1,250 |  | 988
2022 | 1,227 |  | 521
2021 | 691 |  | 0
2020 | 0 |  | 4,640
Prior | 4,349 |  | 1,436
Revolving Loans Amortized Cost Basis | 808 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 8,325 |  | 7,953
Substandard | Total commercial | Real estate |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
2020 | 0 |  | 0
Prior | 18,812 |  | 18,999
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 18,812 |  | 18,999
Substandard | Total commercial | Acquisition, development and construction |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 14,652 |  | 0
2020 | 0 |  | 0
Prior | 708 |  | 754
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 15,360 |  | 754
Substandard | Residential real estate |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 988
2022 | 0 |  | 3,764
2021 | 0 |  | 82
2020 | 81 |  | 146
Prior | 787 |  | 777
Revolving Loans Amortized Cost Basis | 120 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 988 |  | 5,757
Substandard | Home equity lines of credit |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 83
2022 | 0 |  | 0
2021 | 0 |  | 78
2020 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 165 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 165 |  | 161
Substandard | Consumer |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 20
2023 | 21 |  | 266
2022 | 189 |  | 58
2021 | 10 |  | 0
2020 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 220 |  | 344
Doubtful |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 2,022
2022 | 924 |  | 839
2021 | 990 |  | 264
2020 | 264 |  | 0
Prior | 1,122 |  | 1,497
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 3,300 |  | 4,622
Doubtful | Total commercial | Business |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 2,022
2022 | 924 |  | 839
2021 | 779 |  | 264
2020 | 264 |  | 0
Prior | 1,028 |  | 1,402
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 2,995 |  | 4,527
Doubtful | Total commercial | Real estate |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
2020 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 |  | 0
Doubtful | Total commercial | Acquisition, development and construction |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
2020 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 |  | 0
Doubtful | Residential real estate |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 211 |  | 0
2020 | 0 |  | 0
Prior | 94 |  | 95
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 305 |  | 95
Doubtful | Home equity lines of credit |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
2020 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 |  | 0
Doubtful | Consumer |  |  |
Total commercial business loans |  |  |
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
2020 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | $ 0 |  | $ 0

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