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Loans and Allowance for Credit Losses - Loan Risk Ratings (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Dec. 31, 2025
Credit quality categories |  |  |
Prior | $ 1,958,739 |  | $ 1,362,664
Year Five | 972,210 |  | 663,013
Year Four | 517,049 |  | 987,622
Year Three | 455,864 |  | 543,191
Year Two | 617,211 |  | 457,635
Year One | 78,876 |  | 616,747
Revolving loans | 245,526 |  | 238,924
Revolving converted to term loans | 2,555 |  | 30,506
Total | 4,848,030 |  | 4,900,302
Current period gross charge-offs |  |  |
Total gross charge-offs | (1,256) | $ (726) |
Total loans evaluated by performing status |  |  |
Credit quality categories |  |  |
Prior | 0 |  | 0
Year Five | 0 |  | 0
Year Four | 0 |  | 0
Year Three | 0 |  | 0
Year Two | 0 |  | 0
Year One | 0 |  | 0
Revolving loans | 4,336 |  | 4,521
Revolving converted to term loans | 0 |  | 0
Total | 4,336 |  | 4,521
Current period gross charge-offs |  |  |
Gross charge-offs, Prior | (577) |  | (636)
Gross charge-offs, Year Five | (399) |  | (2,739)
Gross charge-offs, Year Four | (149) |  | (1,595)
Gross charge-offs, Year Three | (17) |  | (975)
Gross charge-offs, Year Two | (15) |  | (324)
Gross charge-offs, Year One | 0 |  | 0
Revolving loans | (99) |  | (979)
Revolving converted to term loans | 0 |  | (31)
Total gross charge-offs | (1,256) |  | (7,279)
Total loans by risk category |  |  |
Credit quality categories |  |  |
Prior | 1,958,739 |  | 1,362,664
Year Five | 972,210 |  | 663,013
Year Four | 517,049 |  | 987,622
Year Three | 455,864 |  | 543,191
Year Two | 617,211 |  | 457,635
Year One | 78,876 |  | 616,747
Revolving loans | 241,190 |  | 234,403
Revolving converted to term loans | 2,555 |  | 30,506
Total | 4,843,694 |  | 4,895,781
Current period gross charge-offs |  |  |
Gross charge-offs, Prior | (577) |  | (636)
Gross charge-offs, Year Five | (399) |  | (2,739)
Gross charge-offs, Year Four | (149) |  | (1,595)
Gross charge-offs, Year Three | (17) |  | (975)
Gross charge-offs, Year Two | (15) |  | (324)
Gross charge-offs, Year One | 0 |  | 0
Revolving loans | (19) |  | (444)
Revolving converted to term loans | 0 |  | (31)
Total gross charge-offs | (1,176) |  | (6,744)
Pass |  |  |
Credit quality categories |  |  |
Prior | 1,878,367 |  | 1,316,177
Year Five | 903,283 |  | 625,423
Year Four | 495,179 |  | 948,569
Year Three | 453,706 |  | 540,936
Year Two | 616,109 |  | 457,235
Year One | 78,586 |  | 616,279
Revolving loans | 235,864 |  | 230,110
Revolving converted to term loans | 2,555 |  | 30,333
Total | 4,663,649 |  | 4,765,062
Special mention |  |  |
Credit quality categories |  |  |
Prior | 45,085 |  | 18,928
Year Five | 51,204 |  | 17,688
Year Four | 940 |  | 34,792
Year Three | 342 |  | 953
Year Two | 52 |  | 76
Year One | 0 |  | 54
Revolving loans | 148 |  | 910
Revolving converted to term loans | 0 |  | 0
Total | 97,771 |  | 73,401
Substandard |  |  |
Credit quality categories |  |  |
Prior | 35,287 |  | 27,559
Year Five | 17,723 |  | 19,902
Year Four | 20,930 |  | 4,261
Year Three | 1,816 |  | 1,302
Year Two | 1,050 |  | 324
Year One | 290 |  | 414
Revolving loans | 5,178 |  | 3,383
Revolving converted to term loans | 0 |  | 173
Total | 82,274 |  | 57,318
Commercial real estate |  |  |
Credit quality categories |  |  |
Prior | 1,317,534 |  | 975,147
Year Five | 589,639 |  | 384,409
Year Four | 238,785 |  | 593,778
Year Three | 152,078 |  | 242,514
Year Two | 263,112 |  | 140,212
Year One | 19,074 |  | 265,405
Revolving loans | 19,443 |  | 15,395
Revolving converted to term loans | 150 |  | 27,136
Total | 2,599,815 |  | 2,643,996
Current period gross charge-offs |  |  |
Gross charge-offs, Prior | 0 |  | (109)
Gross charge-offs, Year Five | 0 |  | (2,640)
Gross charge-offs, Year Four | 0 |  | 0
Gross charge-offs, Year Three | 0 |  | 0
Gross charge-offs, Year Two | 0 |  | 0
Gross charge-offs, Year One | 0 |  | 0
Revolving loans | 0 |  | 0
Revolving converted to term loans | 0 |  | 0
Total gross charge-offs | 0 | 0 | (2,749)
Commercial real estate | Pass |  |  |
Credit quality categories |  |  |
Prior | 1,263,079 |  | 939,986
Year Five | 522,428 |  | 364,719
Year Four | 218,721 |  | 556,924
Year Three | 150,567 |  | 242,170
Year Two | 262,491 |  | 139,929
Year One | 19,074 |  | 265,405
Revolving loans | 19,093 |  | 14,703
Revolving converted to term loans | 150 |  | 27,136
Total | 2,455,603 |  | 2,550,972
Commercial real estate | Special mention |  |  |
Credit quality categories |  |  |
Prior | 28,222 |  | 15,105
Year Five | 50,924 |  | 2,884
Year Four | 341 |  | 34,014
Year Three | 272 |  | 344
Year Two | 0 |  | 0
Year One | 0 |  | 0
Revolving loans | 0 |  | 0
Revolving converted to term loans | 0 |  | 0
Total | 79,759 |  | 52,347
Commercial real estate | Substandard |  |  |
Credit quality categories |  |  |
Prior | 26,233 |  | 20,056
Year Five | 16,287 |  | 16,806
Year Four | 19,723 |  | 2,840
Year Three | 1,239 |  | 0
Year Two | 621 |  | 283
Year One | 0 |  | 0
Revolving loans | 350 |  | 692
Revolving converted to term loans | 0 |  | 0
Total | 64,453 |  | 40,677
Residential real estate |  |  |
Credit quality categories |  |  |
Prior | 509,093 |  | 328,473
Year Five | 273,117 |  | 198,987
Year Four | 199,974 |  | 276,136
Year Three | 157,905 |  | 216,231
Year Two | 123,193 |  | 147,517
Year One | 25,120 |  | 114,412
Revolving loans | 137,291 |  | 132,513
Revolving converted to term loans | 40 |  | 695
Total | 1,425,733 |  | 1,414,964
Current period gross charge-offs |  |  |
Gross charge-offs, Prior | (138) |  | (5)
Gross charge-offs, Year Five | 0 |  | 0
Gross charge-offs, Year Four | 0 |  | 0
Gross charge-offs, Year Three | 0 |  | 0
Gross charge-offs, Year Two | 0 |  | 0
Gross charge-offs, Year One | 0 |  | 0
Revolving loans | (4) |  | (45)
Revolving converted to term loans | 0 |  | 0
Total gross charge-offs | (142) | 0 | (50)
Residential real estate | Pass |  |  |
Credit quality categories |  |  |
Prior | 484,287 |  | 317,764
Year Five | 272,211 |  | 182,198
Year Four | 199,154 |  | 275,869
Year Three | 157,905 |  | 215,397
Year Two | 123,083 |  | 147,517
Year One | 25,120 |  | 114,300
Revolving loans | 136,107 |  | 131,075
Revolving converted to term loans | 40 |  | 695
Total | 1,397,907 |  | 1,384,815
Residential real estate | Special mention |  |  |
Credit quality categories |  |  |
Prior | 16,841 |  | 3,719
Year Five | 191 |  | 14,777
Year Four | 504 |  | 0
Year Three | 0 |  | 504
Year Two | 0 |  | 0
Year One | 0 |  | 0
Revolving loans | 65 |  | 65
Revolving converted to term loans | 0 |  | 0
Total | 17,601 |  | 19,065
Residential real estate | Substandard |  |  |
Credit quality categories |  |  |
Prior | 7,965 |  | 6,990
Year Five | 715 |  | 2,012
Year Four | 316 |  | 267
Year Three | 0 |  | 330
Year Two | 110 |  | 0
Year One | 0 |  | 112
Revolving loans | 1,119 |  | 1,373
Revolving converted to term loans | 0 |  | 0
Total | 10,225 |  | 11,084
Construction |  |  |
Credit quality categories |  |  |
Prior | 33,030 |  | 27,182
Year Five | 6,929 |  | 7,238
Year Four | 27,791 |  | 7,047
Year Three | 90,705 |  | 28,868
Year Two | 151,945 |  | 108,885
Year One | 17,237 |  | 151,981
Revolving loans | 14,252 |  | 13,070
Revolving converted to term loans | 946 |  | 632
Total | 342,835 |  | 344,903
Current period gross charge-offs |  |  |
Gross charge-offs, Prior | 0 |  | 0
Gross charge-offs, Year Five | 0 |  | 0
Gross charge-offs, Year Four | 0 |  | 0
Gross charge-offs, Year Three | 0 |  | 0
Gross charge-offs, Year Two | 0 |  | 0
Gross charge-offs, Year One | 0 |  | 0
Revolving loans | 0 |  | 0
Revolving converted to term loans | 0 |  | 0
Total gross charge-offs | 0 | 0 | 0
Construction | Pass |  |  |
Credit quality categories |  |  |
Prior | 32,869 |  | 27,094
Year Five | 6,929 |  | 7,238
Year Four | 27,791 |  | 7,047
Year Three | 90,705 |  | 28,868
Year Two | 151,703 |  | 108,885
Year One | 17,237 |  | 151,738
Revolving loans | 14,252 |  | 13,070
Revolving converted to term loans | 946 |  | 632
Total | 342,432 |  | 344,572
Construction | Special mention |  |  |
Credit quality categories |  |  |
Prior | 0 |  | 0
Year Five | 0 |  | 0
Year Four | 0 |  | 0
Year Three | 0 |  | 0
Year Two | 0 |  | 0
Year One | 0 |  | 0
Revolving loans | 0 |  | 0
Revolving converted to term loans | 0 |  | 0
Total | 0 |  | 0
Construction | Substandard |  |  |
Credit quality categories |  |  |
Prior | 161 |  | 88
Year Five | 0 |  | 0
Year Four | 0 |  | 0
Year Three | 0 |  | 0
Year Two | 242 |  | 0
Year One | 0 |  | 243
Revolving loans | 0 |  | 0
Revolving converted to term loans | 0 |  | 0
Total | 403 |  | 331
Commercial |  |  |
Credit quality categories |  |  |
Prior | 49,160 |  | 23,907
Year Five | 18,748 |  | 26,600
Year Four | 14,634 |  | 20,604
Year Three | 27,390 |  | 15,557
Year Two | 34,158 |  | 29,383
Year One | 5,847 |  | 35,256
Revolving loans | 69,477 |  | 72,656
Revolving converted to term loans | 1,419 |  | 2,043
Total | 220,833 |  | 226,006
Current period gross charge-offs |  |  |
Gross charge-offs, Prior | (2) |  | (71)
Gross charge-offs, Year Five | (37) |  | 0
Gross charge-offs, Year Four | (149) |  | 0
Gross charge-offs, Year Three | 0 |  | (329)
Gross charge-offs, Year Two | 0 |  | 0
Gross charge-offs, Year One | 0 |  | 0
Revolving loans | (15) |  | (381)
Revolving converted to term loans | 0 |  | (31)
Total gross charge-offs | (203) | (2) | (812)
Commercial | Pass |  |  |
Credit quality categories |  |  |
Prior | 48,218 |  | 23,379
Year Five | 17,998 |  | 25,518
Year Four | 14,055 |  | 19,739
Year Three | 26,743 |  | 14,925
Year Two | 34,088 |  | 29,307
Year One | 5,557 |  | 35,202
Revolving loans | 65,685 |  | 70,493
Revolving converted to term loans | 1,419 |  | 1,870
Total | 213,763 |  | 220,433
Commercial | Special mention |  |  |
Credit quality categories |  |  |
Prior | 22 |  | 104
Year Five | 89 |  | 27
Year Four | 95 |  | 107
Year Three | 70 |  | 105
Year Two | 52 |  | 76
Year One | 0 |  | 54
Revolving loans | 83 |  | 845
Revolving converted to term loans | 0 |  | 0
Total | 411 |  | 1,318
Commercial | Substandard |  |  |
Credit quality categories |  |  |
Prior | 920 |  | 424
Year Five | 661 |  | 1,055
Year Four | 484 |  | 758
Year Three | 577 |  | 527
Year Two | 18 |  | 0
Year One | 290 |  | 0
Revolving loans | 3,709 |  | 1,318
Revolving converted to term loans | 0 |  | 173
Total | 6,659 |  | 4,255
Consumer |  |  |
Credit quality categories |  |  |
Prior | 49,922 |  | 7,955
Year Five | 83,777 |  | 45,779
Year Four | 35,865 |  | 90,057
Year Three | 27,786 |  | 40,021
Year Two | 44,803 |  | 31,638
Year One | 11,598 |  | 49,693
Revolving loans | 727 |  | 769
Revolving converted to term loans | 0 |  | 0
Total | 254,478 |  | 265,912
Current period gross charge-offs |  |  |
Gross charge-offs, Prior | (437) |  | (451)
Gross charge-offs, Year Five | (362) |  | (99)
Gross charge-offs, Year Four | 0 |  | (1,595)
Gross charge-offs, Year Three | (17) |  | (646)
Gross charge-offs, Year Two | (15) |  | (324)
Gross charge-offs, Year One | 0 |  | 0
Revolving loans | 0 |  | (18)
Revolving converted to term loans | 0 |  | 0
Total gross charge-offs | (831) | (482) | (3,133)
Consumer | Pass |  |  |
Credit quality categories |  |  |
Prior | 49,914 |  | 7,954
Year Five | 83,717 |  | 45,750
Year Four | 35,458 |  | 88,990
Year Three | 27,786 |  | 39,576
Year Two | 44,744 |  | 31,597
Year One | 11,598 |  | 49,634
Revolving loans | 727 |  | 769
Revolving converted to term loans | 0 |  | 0
Total | 253,944 |  | 264,270
Consumer | Special mention |  |  |
Credit quality categories |  |  |
Prior | 0 |  | 0
Year Five | 0 |  | 0
Year Four | 0 |  | 671
Year Three | 0 |  | 0
Year Two | 0 |  | 0
Year One | 0 |  | 0
Revolving loans | 0 |  | 0
Revolving converted to term loans | 0 |  | 0
Total | 0 |  | 671
Consumer | Substandard |  |  |
Credit quality categories |  |  |
Prior | 8 |  | 1
Year Five | 60 |  | 29
Year Four | 407 |  | 396
Year Three | 0 |  | 445
Year Two | 59 |  | 41
Year One | 0 |  | 59
Revolving loans | 0 |  | 0
Revolving converted to term loans | 0 |  | 0
Total | 534 |  | 971
Credit cards |  |  |
Credit quality categories |  |  |
Prior | 0 |  | 0
Year Five | 0 |  | 0
Year Four | 0 |  | 0
Year Three | 0 |  | 0
Year Two | 0 |  | 0
Year One | 0 |  | 0
Revolving loans | 4,336 |  | 4,521
Revolving converted to term loans | 0 |  | 0
Total | 4,336 |  | 4,521
Current period gross charge-offs |  |  |
Gross charge-offs, Prior | 0 |  | 0
Gross charge-offs, Year Five | 0 |  | 0
Gross charge-offs, Year Four | 0 |  | 0
Gross charge-offs, Year Three | 0 |  | 0
Gross charge-offs, Year Two | 0 |  | 0
Gross charge-offs, Year One | 0 |  | 0
Revolving loans | (80) |  | (535)
Revolving converted to term loans | 0 |  | 0
Total gross charge-offs | (80) | $ (242) | (535)
Credit cards | Performing |  |  |
Credit quality categories |  |  |
Prior | 0 |  | 0
Year Five | 0 |  | 0
Year Four | 0 |  | 0
Year Three | 0 |  | 0
Year Two | 0 |  | 0
Year One | 0 |  | 0
Revolving loans | 4,273 |  | 4,473
Revolving converted to term loans | 0 |  | 0
Total | 4,273 |  | 4,473
Credit cards | Nonperforming |  |  |
Credit quality categories |  |  |
Prior | 0 |  | 0
Year Five | 0 |  | 0
Year Four | 0 |  | 0
Year Three | 0 |  | 0
Year Two | 0 |  | 0
Year One | 0 |  | 0
Revolving loans | 63 |  | 48
Revolving converted to term loans | 0 |  | 0
Total | $ 63 |  | $ 48

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