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v3.23.3

Adoption of New Accounting Standard - Additional Information (Detail) - USD ($) $ in Thousands |  | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 01, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022 | [1] | Sep. 30, 2022 | Jun. 30, 2022 | Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Financing Receivable, Purchased with Credit Deterioration, Amount at Par Value |  | $ 665 |  |  |  |  |
Financing Receivable, Purchased with Credit Deterioration, Discount (Premium) | $ 5,600 |  |  |  |  |  |
Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price | 59,300 |  |  |  |  |  |
Allowance for credit losses |  | 49,631 | $ 38,567 | $ 30,740 | $ 20,534 | $ 17,242 | $ 12,121
ASC 326 [member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Reduced stockholders' equity |  | 2,900 |  |  |  |  |
Allowance for credit losses | $ 38,158 | 7,400 |  |  |  |  |
Fair value investments entities that calculate net asset value per share unfunded committments |  | 3,700 |  |  |  |  |
ASC 326 [member] | Allowance for Credit Losses [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Reduced stockholders' equity |  | 5,200 |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Asset with financial institutions |  | 5,000,000 |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Asset with financial institutions |  | 3,000,000 |  |  |  |  |
Special Mention [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Line Of credit facility current borrowing capacity |  | 500,000 |  |  |  |  |
pooled loans member |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Line Of credit facility current borrowing capacity |  | $ 1,000,000 |  |  |  |  |
[1] | Derived from audited December 31, 2022 Consolidated Financial Statements.

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