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Derivatives (Offsetting of Derivatives) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Assets |  |
Gross Amounts Recognized | $ 484,184 | $ 602,754
Less: Master Netting Arrangements | (58,679) | (93,063)
Less: Cash collateral received or paid | (42,274) | (8,449)
Derivative asset, after netting | 383,231 | 501,242
Less: Security Collateral Received | 0 | (35)
Net derivative assets | 383,231 | 501,207
Contracts not subject to master netting arrangements, gross amounts recognized | 587 | 1,100
Derivative, cash collateral received, including amount offset by fair value assets, and excess cash amount | (47,000) | 15,800
Liabilities |  |
Gross Amounts Recognized | 390,171 | 424,828
Less: Master Netting Arrangements | (58,679) | (93,063)
Less: Cash collateral received/paid | (174,048) | (91,634)
Derivative liability, after netting | 157,444 | 240,131
Less: Security Collateral Pledged | (106,598) | (221,150)
Net derivative liabilities | 50,846 | 18,981
Contracts not subject to master netting arrangements, gross amounts recognized | 666 | 220
Derivative, cash collateral posted against derivative liabilities, including amount offset the derivative fair value liabilities, and excess cash amount | $ 176,500 | $ 91,600

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