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Loans and Allowance for Credit Losses - Allowance for Credit Losses on Loans by Category of Loan (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | $ 359,852 | $ 345,209 | $ 332,362 | $ 281,576
Initial allowance on loans purchased with credit deterioration |  | 9,694 | 26,078 | 76,793
Provision for credit losses |  |  | 7,923 | 11,984
Charge-offs | (6,540) | (4,115) | (16,259) | (23,139)
Recoveries | 1,085 | 707 | 4,293 | 4,281
Net (charge-offs) recoveries | (5,455) | (3,408) | (11,966) | (18,858)
Allowance for credit losses on loans, ending balance | 354,397 | 351,495 | 354,397 | 351,495
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 76,776 | 91,858 | 87,775 | 78,853
Initial allowance on loans purchased with credit deterioration |  | 1,641 | 942 | 16,878
Provision for credit losses | (633) | 1,437 | (12,467) | (758)
Charge-offs | (378) |  | (486) | (77)
Recoveries |  | 5 | 1 | 45
Net (charge-offs) recoveries | (378) | 5 | (485) | (32)
Allowance for credit losses on loans, ending balance | 75,765 | 94,941 | 75,765 | 94,941
Real Estate [Member] | Agriculture [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 29,479 | 11,254 | 11,380 | 7,699
Initial allowance on loans purchased with credit deterioration |  |  | 14,309 | 2,914
Provision for credit losses | (450) | 149 | 3,577 | 706
Charge-offs | (109) |  | (631) | (113)
Recoveries | 225 |  | 510 | 197
Net (charge-offs) recoveries | 116 |  | (121) | 84
Allowance for credit losses on loans, ending balance | 29,145 | 11,403 | 29,145 | 11,403
Real Estate [Member] | 1-4 Family [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 80,689 | 67,722 | 77,652 | 60,795
Initial allowance on loans purchased with credit deterioration |  |  | 344 | 1,590
Provision for credit losses | 1,442 | 3,932 | 5,017 | 9,059
Charge-offs | (442) | (20) | (1,336) | (121)
Recoveries | 33 | 98 | 45 | 409
Net (charge-offs) recoveries | (409) | 78 | (1,291) | 288
Allowance for credit losses on loans, ending balance | 81,722 | 71,732 | 81,722 | 71,732
Real Estate [Member] | Commercial Real Estate (Includes Multi-Family Residential) [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 95,728 | 86,765 | 88,664 | 66,272
Initial allowance on loans purchased with credit deterioration |  | 4,290 | 4,306 | 25,292
Provision for credit losses | (921) | (4,554) | 1,439 | 9,893
Charge-offs | (297) | (584) | (808) | (15,559)
Recoveries | 39 | 14 | 948 | 33
Net (charge-offs) recoveries | (258) | (570) | 140 | (15,526)
Allowance for credit losses on loans, ending balance | 94,549 | 85,931 | 94,549 | 85,931
Commercial and Industrial [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 70,112 | 81,970 | 59,832 | 62,319
Initial allowance on loans purchased with credit deterioration |  | 3,763 | 6,176 | 30,095
Provision for credit losses | (2,216) | (2,455) | 4,948 | (10,448)
Charge-offs | (3,746) | (1,961) | (8,283) | (3,203)
Recoveries | 437 | 367 | 1,914 | 2,921
Net (charge-offs) recoveries | (3,309) | (1,594) | (6,369) | (282)
Allowance for credit losses on loans, ending balance | 64,587 | 81,684 | 64,587 | 81,684
Consumer and Other [Member] |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for credit losses on loans, beginning balance | 7,068 | 5,640 | 7,059 | 5,638
Initial allowance on loans purchased with credit deterioration |  |  | 1 | 24
Provision for credit losses | 2,778 | 1,491 | 5,409 | 3,532
Charge-offs | (1,568) | (1,550) | (4,715) | (4,066)
Recoveries | 351 | 223 | 875 | 676
Net (charge-offs) recoveries | (1,217) | (1,327) | (3,840) | (3,390)
Allowance for credit losses on loans, ending balance | $ 8,629 | $ 5,804 | $ 8,629 | $ 5,804

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