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v3.25.3

Other Assets and Liabilities - Additional Information (Detail) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) loan | Sep. 30, 2025 USD ($) security_loan | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) loan | Dec. 31, 2024 USD ($) security_loan
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Current expected credit loss reserves for unfunded loan commitments | $ 13,741 | $ 8,300 | $ 13,741 | $ 13,741 | $ 13,741 | $ 8,300 | $ 10,412 | $ 10,412
Number of loans |  |  | 137 | 137 |  |  | 130 | 130
Increase (decrease) in reserve | 2,000 | $ (1,600) |  |  | 3,300 | $ (7,100) |  |
Unfunded Loan Commitments |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Current expected credit loss reserves for unfunded loan commitments | $ 1,532,429 |  | $ 1,532,429 | $ 1,532,429 | $ 1,532,429 |  | $ 1,263,068 | $ 1,263,068
Number of loans | loan |  |  | 57 |  |  |  |  |

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