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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 | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Jun. 30, 2024 | Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | $ 136,775 | $ 135,311 | $ 135,311 | $ 135,311
Charge-offs | (20,763) | (22,827) | (84,465) |
Recoveries | 3,619 | 4,859 |  |
Provision (benefit) for credit losses on loans and leases | 21,445 | 15,953 |  |
Ending balance | 141,076 | 133,296 |  | 136,775
Commercial and industrial, including specialized lending |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | 29,379 | 23,503 | 23,503 | 23,503
Charge-offs | (4,507) | (5,396) |  |
Recoveries | 1,276 | 1,724 |  |
Provision (benefit) for credit losses on loans and leases | 4,436 | 3,172 |  |
Ending balance | 30,584 | 23,003 |  | 29,379
Multifamily |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | 18,511 | 16,343 | 16,343 | 16,343
Charge-offs | (3,834) | (473) |  |
Recoveries | 0 | 0 |  |
Provision (benefit) for credit losses on loans and leases | 4,113 | 2,437 |  |
Ending balance | 18,790 | 18,307 |  | 18,511
Commercial real estate owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | 10,755 | 9,882 | 9,882 | 9,882
Charge-offs | (19) | (22) |  |
Recoveries | 3 | 0 |  |
Provision (benefit) for credit losses on loans and leases | 41 | 341 |  |
Ending balance | 10,780 | 10,201 |  | 10,755
Commercial real estate non-owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | 17,405 | 16,859 | 16,859 | 16,859
Charge-offs | 0 | 0 |  |
Recoveries | 0 | 0 |  |
Provision (benefit) for credit losses on loans and leases | 653 | 1,461 |  |
Ending balance | 18,058 | 18,320 |  | 17,405
Construction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | 1,250 | 1,482 | 1,482 | 1,482
Charge-offs | 0 | 0 |  |
Recoveries | 3 | 0 |  |
Provision (benefit) for credit losses on loans and leases | 11 | 384 |  |
Ending balance | 1,264 | 1,866 |  | 1,250
Residential real estate |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | 5,968 | 6,586 | 6,586 | 6,586
Charge-offs | 0 | (19) |  |
Recoveries | 0 | 1 |  |
Provision (benefit) for credit losses on loans and leases | 195 | 139 |  |
Ending balance | 6,163 | 6,707 |  | 5,968
Manufactured housing |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | 3,829 | 4,239 | 4,239 | 4,239
Charge-offs | 0 | 0 |  |
Recoveries | 0 | 0 |  |
Provision (benefit) for credit losses on loans and leases | (29) | (79) |  |
Ending balance | 3,800 | 4,160 |  | 3,829
Installment |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | 49,678 | 56,417 | $ 56,417 | 56,417
Charge-offs | (12,403) | (16,917) |  |
Recoveries | 2,337 | 3,134 |  |
Provision (benefit) for credit losses on loans and leases | 12,025 | 8,098 |  |
Ending balance | $ 51,637 | $ 50,732 |  | $ 49,678

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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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