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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Risk Grading of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | $ 824,858 | $ 2,869,611
Current fiscal year, charge-offs | 0 | 1,450
Fiscal year before current fiscal year | 2,590,012 | 1,733,843
Fiscal year before current fiscal year, charge-offs | 801 | 40,529
Two years before current fiscal year | 1,636,520 | 1,937,367
Two years before current fiscal year, charge-offs | 1,382 | 1,681
Three years before current fiscal year | 1,851,545 | 1,569,313
Three years before current fiscal year, charge-offs | 467 | 8,947
Four years before current fiscal year | 1,477,084 | 1,142,386
Four years before current fiscal year, charge-offs | 3,142 | 576
Prior | 2,136,306 | 1,139,559
Prior, charge-offs | 390 | 1,060
Revolving loans amortized cost basis | 2,486,297 | 2,447,911
Revolving loans amortized cost basis, charge-offs | 0 | 0
Revolving loans converted to term | 2,283 | 14,369
Revolving loans converted to term, charge-offs | 0 | 0
Total | 13,004,905 | 12,854,359
Total, charge-offs | 6,182 | 54,243
Commercial and industrial loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 449,752 | 1,359,867
Current fiscal year, charge-offs | 0 | 1,242
Fiscal year before current fiscal year | 1,207,288 | 539,311
Fiscal year before current fiscal year, charge-offs | 630 | 39,087
Two years before current fiscal year | 465,945 | 244,687
Two years before current fiscal year, charge-offs | 1,040 | 341
Three years before current fiscal year | 214,085 | 166,561
Three years before current fiscal year, charge-offs | 16 | 8,605
Four years before current fiscal year | 148,033 | 58,942
Four years before current fiscal year, charge-offs | 3,094 | 500
Prior | 95,609 | 51,036
Prior, charge-offs | 87 | 424
Revolving loans amortized cost basis | 1,725,885 | 1,693,245
Revolving loans amortized cost basis, charge-offs | 0 | 0
Revolving loans converted to term | 0 | 643
Revolving loans converted to term, charge-offs | 0 | 0
Total | 4,306,597 | 4,114,292
Total, charge-offs | 4,867 | 50,199
Commercial and industrial loans | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 431,109 | 1,314,174
Fiscal year before current fiscal year | 1,184,550 | 493,138
Two years before current fiscal year | 441,048 | 196,877
Three years before current fiscal year | 165,738 | 158,215
Four years before current fiscal year | 142,290 | 55,639
Prior | 91,465 | 49,554
Revolving loans amortized cost basis | 1,614,342 | 1,576,409
Revolving loans converted to term | 0 | 130
Total | 4,070,542 | 3,844,136
Commercial and industrial loans | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 138 | 14,982
Fiscal year before current fiscal year | 6,225 | 13,282
Two years before current fiscal year | 6,271 | 20,837
Three years before current fiscal year | 21,724 | 1,097
Four years before current fiscal year | 823 | 2,222
Prior | 2,286 | 348
Revolving loans amortized cost basis | 44,753 | 41,187
Revolving loans converted to term | 0 | 0
Total | 82,220 | 93,955
Commercial and industrial loans | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 18,505 | 29,238
Fiscal year before current fiscal year | 14,539 | 32,285
Two years before current fiscal year | 18,614 | 26,973
Three years before current fiscal year | 26,623 | 7,249
Four years before current fiscal year | 3,570 | 1,081
Prior | 1,281 | 1,134
Revolving loans amortized cost basis | 66,790 | 75,649
Revolving loans converted to term | 0 | 513
Total | 149,922 | 174,122
Commercial and industrial loans | Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 | 1,473
Fiscal year before current fiscal year | 1,974 | 606
Two years before current fiscal year | 12 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 1,350 | 0
Prior | 577 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 3,913 | 2,079
Agricultural land, production and other loans to farmers |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 19,203 | 31,323
Fiscal year before current fiscal year | 26,763 | 23,118
Two years before current fiscal year | 22,313 | 31,563
Three years before current fiscal year | 30,939 | 27,124
Four years before current fiscal year | 26,248 | 27,585
Prior | 55,446 | 30,433
Revolving loans amortized cost basis | 62,952 | 85,166
Revolving loans converted to term | 0 | 0
Total | 243,864 | 256,312
Agricultural land, production and other loans to farmers | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 18,823 | 28,600
Fiscal year before current fiscal year | 24,089 | 23,070
Two years before current fiscal year | 22,240 | 30,518
Three years before current fiscal year | 29,683 | 26,442
Four years before current fiscal year | 25,580 | 27,105
Prior | 53,261 | 29,930
Revolving loans amortized cost basis | 60,772 | 84,502
Revolving loans converted to term | 0 | 0
Total | 234,448 | 250,167
Agricultural land, production and other loans to farmers | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 | 169
Fiscal year before current fiscal year | 159 | 0
Two years before current fiscal year | 29 | 245
Three years before current fiscal year | 476 | 0
Four years before current fiscal year | 0 | 446
Prior | 863 | 422
Revolving loans amortized cost basis | 1,227 | 528
Revolving loans converted to term | 0 | 0
Total | 2,754 | 1,810
Agricultural land, production and other loans to farmers | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 380 | 2,554
Fiscal year before current fiscal year | 2,515 | 48
Two years before current fiscal year | 44 | 800
Three years before current fiscal year | 780 | 682
Four years before current fiscal year | 668 | 34
Prior | 1,322 | 81
Revolving loans amortized cost basis | 953 | 136
Revolving loans converted to term | 0 | 0
Total | 6,662 | 4,335
Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 59,583 | 338,806
Fiscal year before current fiscal year | 351,563 | 225,682
Two years before current fiscal year | 223,438 | 152,105
Three years before current fiscal year | 123,453 | 47,728
Four years before current fiscal year | 13,782 | 6,398
Prior | 11,029 | 8,589
Revolving loans amortized cost basis | 10,327 | 12,836
Revolving loans converted to term | 0 | 0
Total | 793,175 | 792,144
Construction | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 25,407 | 241,622
Fiscal year before current fiscal year | 243,728 | 203,829
Two years before current fiscal year | 200,293 | 114,794
Three years before current fiscal year | 60,604 | 31,864
Four years before current fiscal year | 13,178 | 6,398
Prior | 10,994 | 8,549
Revolving loans amortized cost basis | 10,327 | 12,836
Revolving loans converted to term | 0 | 0
Total | 564,531 | 619,892
Construction | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 12,176 | 74,879
Fiscal year before current fiscal year | 97,317 | 21,853
Two years before current fiscal year | 23,145 | 19,019
Three years before current fiscal year | 44,557 | 15,214
Four years before current fiscal year | 0 | 0
Prior | 35 | 40
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 177,230 | 131,005
Construction | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 22,000 | 22,305
Fiscal year before current fiscal year | 10,518 | 0
Two years before current fiscal year | 0 | 18,292
Three years before current fiscal year | 18,292 | 0
Four years before current fiscal year | 604 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 51,414 | 40,597
Construction | Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year |  | 0
Fiscal year before current fiscal year |  | 0
Two years before current fiscal year |  | 0
Three years before current fiscal year |  | 650
Four years before current fiscal year |  | 0
Prior |  | 0
Revolving loans amortized cost basis |  | 0
Revolving loans converted to term |  | 0
Total |  | 650
Commercial real estate, non-owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 116,249 | 496,934
Current fiscal year, charge-offs | 0 | 0
Fiscal year before current fiscal year | 389,909 | 287,464
Fiscal year before current fiscal year, charge-offs | 0 | 339
Two years before current fiscal year | 264,488 | 384,409
Two years before current fiscal year, charge-offs | 0 | 3
Three years before current fiscal year | 375,783 | 425,920
Three years before current fiscal year, charge-offs | 178 | 0
Four years before current fiscal year | 412,238 | 351,266
Four years before current fiscal year, charge-offs | 0 | 0
Prior | 585,183 | 308,160
Prior, charge-offs | 15 | 1
Revolving loans amortized cost basis | 34,019 | 19,863
Revolving loans amortized cost basis, charge-offs | 0 | 0
Revolving loans converted to term | 0 | 0
Revolving loans converted to term, charge-offs | 0 | 0
Total | 2,177,869 | 2,274,016
Total, charge-offs | 193 | 343
Commercial real estate, non-owner occupied | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 100,071 | 383,279
Fiscal year before current fiscal year | 325,566 | 275,907
Two years before current fiscal year | 250,185 | 342,442
Three years before current fiscal year | 330,932 | 406,289
Four years before current fiscal year | 394,174 | 327,372
Prior | 561,031 | 278,362
Revolving loans amortized cost basis | 33,931 | 19,863
Revolving loans converted to term | 0 | 0
Total | 1,995,890 | 2,033,514
Commercial real estate, non-owner occupied | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 3,286 | 79,440
Fiscal year before current fiscal year | 52,913 | 9,051
Two years before current fiscal year | 11,867 | 35,230
Three years before current fiscal year | 38,487 | 12,975
Four years before current fiscal year | 11,423 | 5,287
Prior | 4,941 | 28,200
Revolving loans amortized cost basis | 86 | 0
Revolving loans converted to term | 0 | 0
Total | 123,003 | 170,183
Commercial real estate, non-owner occupied | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 12,892 | 34,215
Fiscal year before current fiscal year | 11,430 | 2,506
Two years before current fiscal year | 2,436 | 6,737
Three years before current fiscal year | 6,364 | 6,656
Four years before current fiscal year | 6,641 | 18,607
Prior | 19,211 | 1,598
Revolving loans amortized cost basis | 2 | 0
Revolving loans converted to term | 0 | 0
Total | 58,976 | 70,319
Commercial real estate, owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 91,871 | 209,900
Current fiscal year, charge-offs | 0 | 0
Fiscal year before current fiscal year | 210,357 | 160,646
Fiscal year before current fiscal year, charge-offs | 51 | 0
Two years before current fiscal year | 159,669 | 175,469
Two years before current fiscal year, charge-offs | 152 | 0
Three years before current fiscal year | 170,980 | 238,523
Three years before current fiscal year, charge-offs | 0 | 0
Four years before current fiscal year | 224,656 | 208,439
Four years before current fiscal year, charge-offs | 0 | 9
Prior | 320,632 | 132,934
Prior, charge-offs | 5 | 0
Revolving loans amortized cost basis | 36,574 | 32,033
Revolving loans amortized cost basis, charge-offs | 0 | 0
Revolving loans converted to term | 0 | 0
Revolving loans converted to term, charge-offs | 0 | 0
Total | 1,214,739 | 1,157,944
Total, charge-offs | 208 | 9
Commercial real estate, owner occupied | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 74,568 | 194,703
Fiscal year before current fiscal year | 177,392 | 141,964
Two years before current fiscal year | 147,507 | 164,725
Three years before current fiscal year | 159,448 | 217,319
Four years before current fiscal year | 213,429 | 198,314
Prior | 308,349 | 127,431
Revolving loans amortized cost basis | 36,114 | 31,573
Revolving loans converted to term | 0 | 0
Total | 1,116,807 | 1,076,029
Commercial real estate, owner occupied | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 481 | 1,887
Fiscal year before current fiscal year | 15,365 | 11,013
Two years before current fiscal year | 5,129 | 7,555
Three years before current fiscal year | 9,712 | 9,910
Four years before current fiscal year | 7,719 | 8,603
Prior | 8,369 | 1,951
Revolving loans amortized cost basis | 460 | 460
Revolving loans converted to term | 0 | 0
Total | 47,235 | 41,379
Commercial real estate, owner occupied | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 16,822 | 13,310
Fiscal year before current fiscal year | 14,027 | 7,669
Two years before current fiscal year | 7,033 | 3,189
Three years before current fiscal year | 1,820 | 11,294
Four years before current fiscal year | 3,508 | 1,522
Prior | 3,914 | 3,552
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 47,124 | 40,536
Commercial real estate, owner occupied | Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 |
Fiscal year before current fiscal year | 3,573 |
Two years before current fiscal year | 0 |
Three years before current fiscal year | 0 |
Four years before current fiscal year | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total | 3,573 |
Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 49,584 | 223,850
Current fiscal year, charge-offs | 0 | 0
Fiscal year before current fiscal year | 217,706 | 417,417
Fiscal year before current fiscal year, charge-offs | 26 | 173
Two years before current fiscal year | 423,225 | 687,790
Two years before current fiscal year, charge-offs | 50 | 779
Three years before current fiscal year | 680,705 | 405,283
Three years before current fiscal year, charge-offs | 121 | 136
Four years before current fiscal year | 400,067 | 330,261
Four years before current fiscal year, charge-offs | 0 | 20
Prior | 609,677 | 300,731
Prior, charge-offs | 187 | 288
Revolving loans amortized cost basis | 8,824 | 9,384
Revolving loans amortized cost basis, charge-offs | 0 | 0
Revolving loans converted to term | 64 | 13
Revolving loans converted to term, charge-offs | 0 | 0
Total | 2,389,852 | 2,374,729
Total, charge-offs | 384 | 1,396
Residential | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 49,584 | 221,016
Fiscal year before current fiscal year | 215,741 | 413,552
Two years before current fiscal year | 417,482 | 672,713
Three years before current fiscal year | 665,752 | 397,192
Four years before current fiscal year | 392,322 | 326,154
Prior | 599,913 | 293,785
Revolving loans amortized cost basis | 8,327 | 8,887
Revolving loans converted to term | 48 | 13
Total | 2,349,169 | 2,333,312
Residential | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 | 1,528
Fiscal year before current fiscal year | 485 | 1,953
Two years before current fiscal year | 3,581 | 6,228
Three years before current fiscal year | 6,036 | 4,102
Four years before current fiscal year | 3,667 | 2,891
Prior | 4,948 | 3,152
Revolving loans amortized cost basis | 150 | 150
Revolving loans converted to term | 16 | 0
Total | 18,883 | 20,004
Residential | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 | 1,306
Fiscal year before current fiscal year | 1,480 | 1,912
Two years before current fiscal year | 2,162 | 8,849
Three years before current fiscal year | 8,917 | 3,989
Four years before current fiscal year | 4,078 | 1,216
Prior | 4,816 | 3,794
Revolving loans amortized cost basis | 347 | 347
Revolving loans converted to term | 0 | 0
Total | 21,800 | 21,413
Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 2,350 | 6,887
Current fiscal year, charge-offs | 0 | 0
Fiscal year before current fiscal year | 11,799 | 4,354
Fiscal year before current fiscal year, charge-offs | 6 | 10
Two years before current fiscal year | 4,193 | 25,757
Two years before current fiscal year, charge-offs | 0 | 35
Three years before current fiscal year | 24,292 | 52,413
Three years before current fiscal year, charge-offs | 11 | 22
Four years before current fiscal year | 50,563 | 10,783
Four years before current fiscal year, charge-offs | 2 | 0
Prior | 15,862 | 4,141
Prior, charge-offs | 44 | 267
Revolving loans amortized cost basis | 539,221 | 541,944
Revolving loans amortized cost basis, charge-offs | 0 | 0
Revolving loans converted to term | 2,219 | 13,532
Revolving loans converted to term, charge-offs | 0 | 0
Total | 650,499 | 659,811
Total, charge-offs | 63 | 334
Home equity | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 2,289 | 6,788
Fiscal year before current fiscal year | 11,023 | 4,354
Two years before current fiscal year | 4,193 | 24,810
Three years before current fiscal year | 23,629 | 51,313
Four years before current fiscal year | 49,320 | 10,486
Prior | 14,843 | 3,976
Revolving loans amortized cost basis | 532,713 | 535,132
Revolving loans converted to term | 2,105 | 12,124
Total | 640,115 | 648,983
Home equity | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 | 38
Fiscal year before current fiscal year | 38 | 0
Two years before current fiscal year | 0 | 375
Three years before current fiscal year | 0 | 285
Four years before current fiscal year | 467 | 297
Prior | 36 | 69
Revolving loans amortized cost basis | 4,069 | 4,568
Revolving loans converted to term | 114 | 442
Total | 4,724 | 6,074
Home equity | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 61 | 61
Fiscal year before current fiscal year | 738 | 0
Two years before current fiscal year | 0 | 572
Three years before current fiscal year | 663 | 815
Four years before current fiscal year | 776 | 0
Prior | 983 | 96
Revolving loans amortized cost basis | 2,439 | 2,244
Revolving loans converted to term | 0 | 966
Total | 5,660 | 4,754
Individuals' loans for household and other personal expenditures |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 14,306 | 40,972
Current fiscal year, charge-offs | 0 | 208
Fiscal year before current fiscal year | 25,105 | 22,101
Fiscal year before current fiscal year, charge-offs | 88 | 920
Two years before current fiscal year | 19,430 | 31,703
Two years before current fiscal year, charge-offs | 140 | 523
Three years before current fiscal year | 29,142 | 10,695
Three years before current fiscal year, charge-offs | 141 | 184
Four years before current fiscal year | 8,985 | 2,335
Four years before current fiscal year, charge-offs | 46 | 47
Prior | 5,928 | 4,733
Prior, charge-offs | 52 | 80
Revolving loans amortized cost basis | 38,058 | 53,308
Revolving loans amortized cost basis, charge-offs | 0 | 0
Revolving loans converted to term | 0 | 181
Revolving loans converted to term, charge-offs | 0 | 0
Total | 140,954 | 166,028
Total, charge-offs | 467 | 1,962
Individuals' loans for household and other personal expenditures | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 14,306 | 40,819
Fiscal year before current fiscal year | 24,848 | 21,867
Two years before current fiscal year | 19,061 | 31,356
Three years before current fiscal year | 28,870 | 10,520
Four years before current fiscal year | 8,844 | 2,276
Prior | 5,912 | 4,693
Revolving loans amortized cost basis | 38,013 | 53,180
Revolving loans converted to term | 0 | 180
Total | 139,854 | 164,891
Individuals' loans for household and other personal expenditures | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 | 153
Fiscal year before current fiscal year | 257 | 234
Two years before current fiscal year | 369 | 347
Three years before current fiscal year | 272 | 175
Four years before current fiscal year | 141 | 59
Prior | 16 | 40
Revolving loans amortized cost basis | 45 | 128
Revolving loans converted to term | 0 | 0
Total | 1,100 | 1,136
Individuals' loans for household and other personal expenditures | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year |  | 0
Fiscal year before current fiscal year |  | 0
Two years before current fiscal year |  | 0
Three years before current fiscal year |  | 0
Four years before current fiscal year |  | 0
Prior |  | 0
Revolving loans amortized cost basis |  | 0
Revolving loans converted to term |  | 1
Total |  | 1
Public finance and other commercial loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 21,960 | 161,072
Fiscal year before current fiscal year | 149,522 | 53,750
Two years before current fiscal year | 53,819 | 203,884
Three years before current fiscal year | 202,166 | 195,066
Four years before current fiscal year | 192,512 | 146,377
Prior | 436,940 | 298,802
Revolving loans amortized cost basis | 30,437 | 132
Revolving loans converted to term | 0 | 0
Total | 1,087,356 | 1,059,083
Public finance and other commercial loans | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 21,960 | 161,072
Fiscal year before current fiscal year | 149,522 | 53,750
Two years before current fiscal year | 53,341 | 203,884
Three years before current fiscal year | 202,166 | 195,066
Four years before current fiscal year | 192,512 | 146,377
Prior | 434,690 | 298,802
Revolving loans amortized cost basis | 30,437 | 132
Revolving loans converted to term | 0 | 0
Total | 1,084,628 | $ 1,059,083
Public finance and other commercial loans | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 |
Fiscal year before current fiscal year | 0 |
Two years before current fiscal year | 478 |
Three years before current fiscal year | 0 |
Four years before current fiscal year | 0 |
Prior | 2,250 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total | $ 2,728 |

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