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Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Schedule of Allowance for Credit Losses (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | $ 135,311 | $ 130,924 | $ 130,924
Charge-offs | (22,827) | (21,114) | (95,066)
Recoveries | 4,859 | 2,463 |
Provision (benefit) for credit losses on loans and leases | 15,953 | 18,008 |
Ending balance | 133,296 | 130,281 | 135,311
Commercial and industrial, including specialized lending |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 23,503 | 17,582 | 17,582
Charge-offs | (5,396) | (160) |
Recoveries | 1,724 | 231 |
Provision (benefit) for credit losses on loans and leases | 3,172 | 2,397 |
Ending balance | 23,003 | 20,050 | 23,503
Multifamily |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 16,343 | 14,541 | 14,541
Charge-offs | (473) | 0 |
Recoveries | 0 | 0 |
Provision (benefit) for credit losses on loans and leases | 2,437 | 543 |
Ending balance | 18,307 | 15,084 | 16,343
Commercial real estate owner occupied |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 9,882 | 6,454 | 6,454
Charge-offs | (22) | 0 |
Recoveries | 0 | 0 |
Provision (benefit) for credit losses on loans and leases | 341 | 2,018 |
Ending balance | 10,201 | 8,472 | 9,882
Commercial real estate non-owner occupied |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 16,859 | 11,219 | 11,219
Charge-offs | 0 | (4,239) |
Recoveries | 0 | 5 |
Provision (benefit) for credit losses on loans and leases | 1,461 | 4,047 |
Ending balance | 18,320 | 11,032 | 16,859
Construction |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 1,482 | 1,913 | 1,913
Charge-offs | 0 | 0 |
Recoveries | 0 | 116 |
Provision (benefit) for credit losses on loans and leases | 384 | 307 |
Ending balance | 1,866 | 2,336 | 1,482
Residential real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 6,586 | 6,094 | 6,094
Charge-offs | (19) | 0 |
Recoveries | 1 | 2 |
Provision (benefit) for credit losses on loans and leases | 139 | 757 |
Ending balance | 6,707 | 6,853 | 6,586
Manufactured housing |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 4,239 | 4,430 | 4,430
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Provision (benefit) for credit losses on loans and leases | (79) | (91) |
Ending balance | 4,160 | 4,339 | 4,239
Installment |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 56,417 | 68,691 | 68,691
Charge-offs | (16,917) | (16,715) |
Recoveries | 3,134 | 2,109 |
Provision (benefit) for credit losses on loans and leases | 8,098 | 8,030 |
Ending balance | $ 50,732 | $ 62,115 | $ 56,417

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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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