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LOANS AND LEASES RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LEASES- Schedule of Loans and Leases Receivable (Detail) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | --- | --- | --- | --- | ---
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | $ 14,668,170 |  | $ 13,104,883 |  |  |
Loans and leases receivable | 14,673,636 |  | 13,127,634 |  |  |
Loans receivable, mortgage finance, at fair value | 1,486,978 |  | 1,321,128 |  |  |
Loans receivable, installment, at fair value | 111,636 |  | 0 |  |  |
Allowance for credit losses on loans and leases | (151,809) | $ (147,418) | (136,775) | $ (133,158) | $ (132,436) | $ (135,311)
Total loans and leases receivable, net of allowance for credit losses on loans and leases | 16,120,441 |  | 14,311,987 |  |  |
Deferred (fees) costs and unamortized (discounts) premiums, net | (35,500) |  | (20,800) |  |  |
Multifamily |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 2,356,590 |  | 2,252,246 |  |  |
Allowance for credit losses on loans and leases | (19,973) | (20,864) | (18,511) | (18,090) | (20,652) | (16,343)
Construction |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 123,290 |  | 147,209 |  |  |
Allowance for credit losses on loans and leases | (1,978) | (2,160) | (1,250) | (1,606) | (1,856) | (1,482)
Residential real estate |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 514,544 |  | 496,559 |  |  |
Allowance for credit losses on loans and leases | (6,345) | (6,331) | (5,968) | (5,837) | (5,884) | (6,586)
Manufactured housing |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 28,749 |  | 33,123 |  |  |
Allowance for credit losses on loans and leases | (3,508) | $ (3,721) | (3,829) | $ (4,081) | $ (4,094) | $ (4,239)
Commercial |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 13,350,806 |  | 11,884,299 |  |  |
Commercial | Specialized lending |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 7,083,620 |  | 5,842,420 |  |  |
Commercial | Other commercial and industrial |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 1,146,233 |  | 1,182,350 |  |  |
Commercial | Multifamily |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 2,356,590 |  | 2,252,246 |  |  |
Commercial | Commercial real estate owner occupied |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 1,058,741 |  | 1,100,944 |  |  |
Commercial | Commercial real estate non-owner occupied |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 1,582,332 |  | 1,359,130 |  |  |
Commercial | Construction |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 123,290 |  | 147,209 |  |  |
Commercial | Direct finance equipment leases |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Loans and leases receivable | 272,100 |  | 262,700 |  |  |
Consumer |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 1,322,830 |  | 1,243,335 |  |  |
Consumer | Residential real estate |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 514,544 |  | 496,559 |  |  |
Consumer | Manufactured housing |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 28,749 |  | 33,123 |  |  |
Consumer | Personal |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | 570,768 |  | 463,854 |  |  |
Consumer | Other |  |  |  |  |  |
PCD debt securities acquired: |  |  |  |  |  |
Total consumer loans receivable | $ 208,769 |  | $ 249,799 |  |  |

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