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Loans Receivable - Additional Information (Detail) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 USD ($) Loan | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) Loan
Schedule Of Activity Relating To Amount Due From Related Party [Line Items] |  |  |
Number of loans | Loan | 9 |  | 9
Troubled debt restructuring | $ 16,700 |  | $ 26,800
Residential Loan [Member] |  |  |
Schedule Of Activity Relating To Amount Due From Related Party [Line Items] |  |  |
Payments to Acquire Loans Receivable | 74,200 |  |
Consumer Loans [Member] |  |  |
Schedule Of Activity Relating To Amount Due From Related Party [Line Items] |  |  |
Payments to Acquire Loans Receivable | 5,100 |  |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Schedule Of Activity Relating To Amount Due From Related Party [Line Items] |  |  |
Financing receivable, accrued interest, writeoff | 933 | $ 692 |
Loans Receivable [Member] |  |  |
Schedule Of Activity Relating To Amount Due From Related Party [Line Items] |  |  |
Accrued Interest Receivable | $ 7,600 |  | $ 6,500
Performing [Member] |  |  |
Schedule Of Activity Relating To Amount Due From Related Party [Line Items] |  |  |
Number of loans | Loan | 0 |  | 0

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