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Offsetting of Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Offsetting Assets and Liabilities [Line Items] |  |
Repurchase agreements gross and Net Amounts of Liabilities Presented in the Statement of Financial Condition | $ 89,944 | $ 57,980
Repurchase agreements gross Amounts Not Offset in the Statement of Financial Condition, Financial Instruments | 89,944 | 57,980
Repurchase agreements gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral Received | 0 | 0
Repurchase agreements Net Amount | 0 | 0
Gross and Net Amounts of Liabilities Presented in the Statement of Financial Condition | 178,126 | 205,646
Gross Amounts Not Offset in the Statement of Financial Condition, Financial Instruments | 175,310 | 176,532
Gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral Received | 1,345 | 1,347
Net Amount | 1,471 | 27,767
Freestanding Derivatives |  |
Offsetting Assets and Liabilities [Line Items] |  |
Derivatives gross and Net Amounts of Assets Presented in the Statement of Financial Condition | 277,603 | 146,061
Derivatives gross Amounts Not Offset in the Statement of Financial Condition, Financial Instruments | 165,897 | 137,265
Derivatives gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral Received | 96,436 | 41
Derivatives Net Amount | 15,270 | 8,755
Derivatives gross and Net Amounts of Liabilities Presented in the Statement of Financial Condition | 88,182 | 147,666
Derivatives gross Amounts Not Offset in the Statement of Financial Condition, Financial Instruments | 85,366 | 118,552
Derivatives gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral Received | 1,345 | 1,347
Derivatives Net Amount | $ 1,471 | $ 27,767

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