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Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jun. 15, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | $ 135,311 | $ 130,924 | $ 137,804
Charge-offs |  | (84,465) | (95,066) | (77,196)
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  |  | 2,576 |
Recoveries |  | 16,130 | 26,031 | 10,828
Provision (benefit) for credit losses on loans and leases |  | 69,799 | 70,846 | 59,488
Ending balance |  | 136,775 | 135,311 | 130,924
Allowance for credit losses on FDIC PCD loans, excluding charge-offs | $ 8,700 |  |  |
Commercial and industrial, including specialized lending |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 23,503 | 17,582 | 12,702
Charge-offs |  | (23,735) | (16,915) | (16,248)
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  |  | 2,576 |
Recoveries |  | 5,689 | 8,472 | 1,182
Provision (benefit) for credit losses on loans and leases |  | 23,922 | 11,788 | 19,946
Ending balance |  | 29,379 | 23,503 | 17,582
Commercial and industrial, including specialized lending | Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-offs |  | (23,735) | (16,915) |
Multifamily |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 16,343 | 14,541 | 4,477
Charge-offs |  | (4,073) | (3,574) | (1,990)
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  |  | 0 |
Recoveries |  | 0 | 0 | 337
Provision (benefit) for credit losses on loans and leases |  | 6,241 | 5,376 | 11,717
Ending balance |  | 18,511 | 16,343 | 14,541
Multifamily | Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-offs |  | (4,073) | (3,574) |
Commercial real estate owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 9,882 | 6,454 | 3,213
Charge-offs |  | (365) | (39) | 0
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  |  | 0 |
Recoveries |  | 0 | 34 | 51
Provision (benefit) for credit losses on loans and leases |  | 1,238 | 3,433 | 3,190
Ending balance |  | 10,755 | 9,882 | 6,454
Commercial real estate owner occupied | Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-offs |  | (365) | (39) |
Commercial real estate non-owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 16,859 | 11,219 | 6,210
Charge-offs |  | (145) | (4,527) | (6,075)
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  |  | 0 |
Recoveries |  | 0 | 315 | 121
Provision (benefit) for credit losses on loans and leases |  | 691 | 9,852 | 10,963
Ending balance |  | 17,405 | 16,859 | 11,219
Commercial real estate non-owner occupied | Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-offs |  | (145) | (4,527) |
Construction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 1,482 | 1,913 | 692
Charge-offs |  | 0 | 0 | 0
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  |  | 0 |
Recoveries |  | 10 | 116 | 236
Provision (benefit) for credit losses on loans and leases |  | (242) | (547) | 985
Ending balance |  | 1,250 | 1,482 | 1,913
Construction | Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-offs |  | 0 | 0 |
Residential real estate |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 6,586 | 6,094 | 2,383
Charge-offs |  | (38) | (69) | (17)
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  |  | 0 |
Recoveries |  | 79 | 35 | 64
Provision (benefit) for credit losses on loans and leases |  | (659) | 526 | 3,664
Ending balance |  | 5,968 | 6,586 | 6,094
Manufactured housing |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 4,239 | 4,430 | 4,278
Charge-offs |  | 0 | 0 | 0
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  |  | 0 |
Recoveries |  | 0 | 0 | 0
Provision (benefit) for credit losses on loans and leases |  | (410) | (191) | 152
Ending balance |  | 3,829 | 4,239 | 4,430
Personal installment |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 56,417 | 68,691 | 103,849
Charge-offs |  | (56,109) | (69,942) | (52,866)
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  |  | 0 |
Recoveries |  | 10,352 | 17,059 | 8,837
Provision (benefit) for credit losses on loans and leases |  | 39,018 | 40,609 | 8,871
Ending balance |  | $ 49,678 | $ 56,417 | $ 68,691
Specialized lending | Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-off of certain PCD loans | $ 6,200 |  |  |

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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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