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Disclosures About Offsetting Assets and Liabilities - Financial Liabilities and Derivative Liabilities that are Subject to Offset (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Offsetting Liabilities [Line Items] |  |
Gross amounts of recognized liabilities, Securities lending | $ (230,321) | $ (149,219)
Net amounts presented in the Statement of Financial Condition, Securities lending | (230,321) | (149,219)
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities lending | 34,712 | 40,259
Gross amounts not offset in the Statement of Financial Position, Collateral pledged, Securities lending | 177,035 | 108,955
Securities lending, Net amount | (18,574) | (5)
Gross amounts of recognized liabilities, Securities purchased under agreements to resell | (350,206) | (385,528)
Net amounts presented in the Statement of Financial Condition, Securities purchased under agreements to resell | (350,206) | (385,528)
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities purchased under agreements to resell | 71,980 | 52,413
Gross amounts not offset in the Statement of Financial Position, Collateral pledged, Securities purchased under agreements to resell | 278,226 | 333,115
Gross amounts of recognized liabilities | (682,774) | (586,894)
Net amounts presented in the Statement of Financial Condition | (682,774) | (586,894)
Gross amounts not offset in the Statement of Financial Position, Financial instruments | 111,647 | 117,821
Gross amounts not offset in the Statement of Financial Condition, Collateral pledged | 494,732 | 469,068
Net amount | (76,395) | (5)
Interest Rate Contract [Member] |  |
Offsetting Liabilities [Line Items] |  |
Gross amounts of recognized liabilities | (102,247) | (52,147)
Net amounts presented in the Statement of Financial Condition | (102,247) | (52,147)
Gross amounts not offset in the Statement of Financial Position, Financial instruments | 4,955 | 25,149
Gross amounts not offset in the Statement of Financial Condition, Collateral pledged | $ 39,471 | $ 26,998

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