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Loans - Summary of Allowance for Loan Losses by Portfolio Class and Category (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Charge-offs | $ (6,650) |  | $ (43,215)
Commercial and industrial |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Charge-offs | (5,256) |  | (35,789)
CRE - investor owned |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Charge-offs | (305) |  | (4,869)
CRE - owner occupied |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Charge-offs | (112) |  |
Construction and land development |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Charge-offs |  |  | (9)
Other |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Charge-offs | (240) |  | (793)
Noncovered Loans |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 134,771 | $ 136,932 | 136,932
Provision (benefit) for credit losses | 6,591 | 1,099 |
Charge-offs | (6,650) | (1,180) |
Recoveries | 786 | 1,444 |
Ending Balance | 135,498 | 138,295 | 134,771
Noncovered Loans | Commercial and industrial |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 58,886 | 53,835 | 53,835
Provision (benefit) for credit losses | 4,978 | 5,083 |
Charge-offs | (5,353) | (707) |
Recoveries | 203 | 938 |
Ending Balance | 58,714 | 59,149 | 58,886
Noncovered Loans | CRE - investor owned |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 31,280 | 36,191 | 36,191
Provision (benefit) for credit losses | 140 | 222 |
Charge-offs | (305) | (170) |
Recoveries | 81 | 23 |
Ending Balance | 31,196 | 36,266 | 31,280
Noncovered Loans | CRE - owner occupied |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 23,405 | 22,752 | 22,752
Provision (benefit) for credit losses | 1,500 | (440) |
Charge-offs | (112) | 0 |
Recoveries | 14 | 16 |
Ending Balance | 24,807 | 22,328 | 23,405
Noncovered Loans | Construction and land development |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 10,198 | 11,444 | 11,444
Provision (benefit) for credit losses | (379) | (2,578) |
Charge-offs | 0 | (9) |
Recoveries | 6 | 32 |
Ending Balance | 9,825 | 8,889 | 10,198
Noncovered Loans | Residential real estate |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 6,142 | 7,928 | 7,928
Provision (benefit) for credit losses | 406 | (1,151) |
Charge-offs | (497) | (102) |
Recoveries | 428 | 322 |
Ending Balance | 6,479 | 6,997 | 6,142
Noncovered Loans | Other |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 4,860 | 4,782 | 4,782
Provision (benefit) for credit losses | (54) | (37) |
Charge-offs | (383) | (192) |
Recoveries | 54 | 113 |
Ending Balance | $ 4,477 | $ 4,666 | $ 4,860

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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