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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, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | $ 130,924 | $ 137,804 | $ 144,176
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  | 2,576 |  |
Charge-offs |  | (95,066) | (77,196) | (40,381)
Recoveries |  | 26,031 | 10,828 | 6,583
Provision (benefit) for credit losses on loans and leases |  | 70,846 | 59,488 | 27,426
Ending balance |  | 135,311 | 130,924 | 137,804
Allowance for credit losses on FDIC PCD loans, excluding charge-offs | $ 8,700 |  |  |
Commercial and industrial, including specialty lending |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 17,582 | 12,702 | 12,239
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  | 0 |  |
Charge-offs |  | (16,915) | (16,248) | (1,550)
Recoveries |  | 8,472 | 1,182 | 1,102
Provision (benefit) for credit losses on loans and leases |  | 11,788 | 19,946 | 911
Ending balance |  | 23,503 | 17,582 | 12,702
Commercial and industrial, including specialty lending | Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-offs |  | (16,915) |  |
Commercial and industrial, including specialty lending | Loans Originated Under Small Business Administration (SBA) CARES Act Paycheck Protection Program, Subsequently Determined Ineligible for Forgiveness |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-offs |  |  | (11,000) |
Multifamily |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 14,541 | 4,477 | 12,620
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  | 2,576 |  |
Charge-offs |  | (3,574) | (1,990) | (1,132)
Recoveries |  | 0 | 337 | 0
Provision (benefit) for credit losses on loans and leases |  | 5,376 | 11,717 | (7,011)
Ending balance |  | 16,343 | 14,541 | 4,477
Multifamily | Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-offs |  | (3,574) |  |
Commercial real estate owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 6,454 | 3,213 | 9,512
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  | 0 |  |
Charge-offs |  | (39) | 0 | (749)
Recoveries |  | 34 | 51 | 500
Provision (benefit) for credit losses on loans and leases |  | 3,433 | 3,190 | (6,050)
Ending balance |  | 9,882 | 6,454 | 3,213
Commercial real estate owner occupied | Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-offs |  | (39) |  |
Commercial real estate non-owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 11,219 | 6,210 | 19,452
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  | 0 |  |
Charge-offs |  | (4,527) | (6,075) | (944)
Recoveries |  | 315 | 121 | 84
Provision (benefit) for credit losses on loans and leases |  | 9,852 | 10,963 | (12,382)
Ending balance |  | 16,859 | 11,219 | 6,210
Commercial real estate non-owner occupied | Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-offs |  | (4,527) |  |
Construction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 1,913 | 692 | 5,871
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  | 0 |  |
Charge-offs |  | 0 | 0 | 0
Recoveries |  | 116 | 236 | 125
Provision (benefit) for credit losses on loans and leases |  | (547) | 985 | (5,304)
Ending balance |  | 1,482 | 1,913 | 692
Construction | Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Charge-offs |  | 0 |  |
Residential real estate |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 6,094 | 2,383 | 3,977
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  | 0 |  |
Charge-offs |  | (69) | (17) | (130)
Recoveries |  | 35 | 64 | 54
Provision (benefit) for credit losses on loans and leases |  | 526 | 3,664 | (1,518)
Ending balance |  | 6,586 | 6,094 | 2,383
Manufactured housing |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 4,430 | 4,278 | 5,190
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  | 0 |  |
Charge-offs |  | 0 | 0 | 0
Recoveries |  | 0 | 0 | 0
Provision (benefit) for credit losses on loans and leases |  | (191) | 152 | (912)
Ending balance |  | 4,239 | 4,430 | 4,278
Installment |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 68,691 | 103,849 | 75,315
Allowance for credit losses on FDIC PCD loans, net of charge-offs |  | 0 |  |
Charge-offs |  | (69,942) | (52,866) | (35,876)
Recoveries |  | 17,059 | 8,837 | 4,718
Provision (benefit) for credit losses on loans and leases |  | 40,609 | 8,871 | 59,692
Ending balance |  | $ 56,417 | $ 68,691 | $ 103,849
Specialty 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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