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Allowance for Credit Losses - Commercial real estate loan portfolio (Details) - Commercial real estate - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 6,261,871 | $ 5,722,372
Percent of total of real estate securing the credit | 100.00% | 100.00%
Commercial real estate construction development |  |
Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 1,094,570 | $ 1,313,984
Percent of total of real estate securing the credit | 17.40% | 23.00%
Hotel |  |
Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 1,063,914 | $ 1,080,706
Percent of total of real estate securing the credit | 17.00% | 18.90%
Retail multi-tenant |  |
Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 722,207 | $ 738,874
Percent of total of real estate securing the credit | 11.50% | 12.90%
Lot development: residential and commercial lots |  |
Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 612,017 | $ 513,760
Percent of total of real estate securing the credit | 9.80% | 9.00%
Warehouse |  |
Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 443,213 | $ 435,783
Percent of total of real estate securing the credit | 7.10% | 7.60%
Office/Professional buildings |  |
Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 511,359 | $ 416,014
Percent of total of real estate securing the credit | 8.20% | 7.30%
1 - 4 family construction |  |
Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 385,380 | $ 338,832
Percent of total of real estate securing the credit | 6.20% | 5.90%
Multi-family |  |
Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 622,232 | $ 310,115
Percent of total of real estate securing the credit | 9.90% | 5.40%
Owner occupied real estate |  |
Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 353,540 | $ 270,584
Percent of total of real estate securing the credit | 5.60% | 4.70%
Commercial leased properties |  |
Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 331,068 | $ 194,023
Percent of total of real estate securing the credit | 5.30% | 3.40%
Farmland |  |
Loan loss allowances, real estate securing credit |  |
Amount of real estate securing the credit | $ 122,371 | $ 109,697
Percent of total of real estate securing the credit | 2.00% | 1.90%

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