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Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | $ 96,868 | $ 87,161 | $ 87,161
Charge-offs | 6,683 | 2,293 |
Recoveries | 4,101 | 982 |
Provision | 4,089 | 6,158 |
Ending balance | 98,375 | 92,008 | 96,868
Average balance | $ 7,759,005 | $ 7,146,358 |
Net charge-offs to loan average balance (annualized) | 0.13% | 0.07% |
Provision (benefit) for credit losses | $ 3,000 | $ 6,200 |
Provision (benefit) for loan credit losses | 4,089 | 6,158 |
Provision (release) for off-balance sheet commitments | (1,000) | (43) |
Credit loss expense (benefit) for held to maturity securities | (39) | 82 |
Real Estate | Commercial Real Estate |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 19,625 | 19,772 | 19,772
Charge-offs | 455 | 42 | 42
Recoveries | 30 | 60 |
Provision | (1,656) | 891 |
Ending balance | 17,544 | 20,681 | 19,625
Average balance | $ 2,438,476 | $ 2,342,545 |
Net charge-offs to loan average balance (annualized) | 0.07% | 0.00% |
Provision (benefit) for loan credit losses | $ (1,656) | $ 891 |
Real Estate | Construction/ Land/ Land Development |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 9,990 | 7,776 | 7,776
Charge-offs | 0 | 0 | 0
Recoveries | 0 | 0 |
Provision | (11) | 289 |
Ending balance | 9,979 | 8,065 | 9,990
Average balance | $ 1,130,355 | $ 974,914 |
Net charge-offs to loan average balance (annualized) | 0.00% | 0.00% |
Provision (benefit) for loan credit losses | $ (11) | $ 289 |
Real Estate | Residential Real Estate |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 10,619 | 8,230 | 8,230
Charge-offs | 0 | 0 | 27
Recoveries | 4 | 5 |
Provision | 11 | 285 |
Ending balance | 10,634 | 8,520 | 10,619
Average balance | $ 1,739,105 | $ 1,519,325 |
Net charge-offs to loan average balance (annualized) | 0.00% | 0.00% |
Provision (benefit) for loan credit losses | $ 11 | $ 285 |
Commercial and Industrial |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 55,330 | 50,148 | 50,148
Charge-offs | 6,181 | 2,169 | 11,833
Recoveries | 4,064 | 912 |
Provision | 5,610 | 4,466 |
Ending balance | 58,823 | 53,357 | 55,330
Average balance | $ 2,121,502 | $ 2,070,356 |
Net charge-offs to loan average balance (annualized) | 0.40% | 0.25% |
Provision (benefit) for loan credit losses | $ 5,610 | $ 4,466 |
Mortgage Warehouse Lines of Credit |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 529 | 379 | 379
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Provision | 132 | 186 |
Ending balance | 661 | 565 | 529
Average balance | $ 306,248 | $ 213,201 |
Net charge-offs to loan average balance (annualized) | 0.00% | 0.00% |
Provision (benefit) for loan credit losses | $ 132 | $ 186 |
Consumer |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 775 | 856 | 856
Charge-offs | 47 | 82 | 147
Recoveries | 3 | 5 |
Provision | 3 | 41 |
Ending balance | 734 | 820 | $ 775
Average balance | $ 23,319 | $ 26,017 |
Net charge-offs to loan average balance (annualized) | 0.76% | 1.20% |
Provision (benefit) for loan credit losses | $ 3 | $ 41 |

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- Definition Percentage of writeoff after recovery to average financing receivables outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (4) -Publisher SEC + Details
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- Definition Amount, excluding accrued interest, of credit loss expense (reversal of expense) on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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