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Derivative Instruments (Schedule of Location on Consolidated Balance Sheets and Fair Value of Principal Derivative Instruments) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Derivative Assets |  |
Gross Amounts of Recognized Assets | $ 46,349 | $ 28,154
Gross Amounts Offset in the Balance Sheet | 1,116 | 3,829
Net Amounts of Assets Presented in the Balance Sheet | 45,233 | 24,325
Collateral | 0 | 3,601
Net Amount | 45,233 | 20,724
Derivative Liabilities |  |
Gross Amounts of Recognized Liabilities | 23,292 | 8,160
Gross Amounts Offset in the Balance Sheet | 932 | 772
Net Amounts of Liabilities Presented in the Balance Sheet | 22,360 | 7,388
Collateral Pledged | 1,620 | 1,473
Net Amount | 20,740 | 5,915
Not Designated as Hedging Instrument |  |
Derivative Assets |  |
Gross Amounts of Recognized Assets | 26,396 | 28,090
Gross Amounts Offset in the Balance Sheet | 1,116 | 3,162
Net Amounts of Assets Presented in the Balance Sheet | 25,280 | 24,928
Collateral | 0 | 3,601
Net Amount | 25,280 | 21,327
Derivative Liabilities |  |
Gross Amounts of Recognized Liabilities | 18,140 | 6,342
Gross Amounts Offset in the Balance Sheet | 932 | 772
Net Amounts of Liabilities Presented in the Balance Sheet | 17,208 | 5,570
Collateral Pledged | 1,620 | 1,473
Net Amount | 15,588 | 4,097
Other assets | Interest rate futures | Not Designated as Hedging Instrument |  |
Derivative Assets |  |
Gross Amounts of Recognized Assets | 1,019 | 234
Gross Amounts Offset in the Balance Sheet | 863 | 122
Net Amounts of Assets Presented in the Balance Sheet | 156 | 112
Collateral | 0 | 0
Net Amount | 156 | 112
Other assets | Interest rate swaps | Not Designated as Hedging Instrument |  |
Derivative Assets |  |
Gross Amounts of Recognized Assets | 22 |
Gross Amounts Offset in the Balance Sheet | 0 |
Net Amounts of Assets Presented in the Balance Sheet | 22 |
Collateral | 0 |
Net Amount | 22 |
Other assets | Foreign currency forward contracts | Not Designated as Hedging Instrument |  |
Derivative Assets |  |
Gross Amounts of Recognized Assets | 23,055 | 22,702
Gross Amounts Offset in the Balance Sheet | 184 | 2,418
Net Amounts of Assets Presented in the Balance Sheet | 22,871 | 20,284
Collateral | 0 | 0
Net Amount | 22,871 | 20,284
Other assets | Foreign currency forward contracts | Not Designated as Hedging Instrument |  |
Derivative Assets |  |
Gross Amounts of Recognized Assets | 2,232 | 1,082
Gross Amounts Offset in the Balance Sheet | 69 | 622
Net Amounts of Assets Presented in the Balance Sheet | 2,163 | 460
Collateral | 0 | 0
Net Amount | 2,163 | 460
Other assets | Foreign currency forward contracts | Designated as Hedging Instrument |  |
Derivative Assets |  |
Gross Amounts of Recognized Assets | 19,953 | 64
Gross Amounts Offset in the Balance Sheet | 0 | 667
Net Amounts of Assets Presented in the Balance Sheet | 19,953 | (603)
Collateral | 0 | 0
Net Amount | 19,953 | (603)
Other assets | Credit default swaps | Not Designated as Hedging Instrument |  |
Derivative Assets |  |
Gross Amounts of Recognized Assets | 68 | 37
Gross Amounts Offset in the Balance Sheet | 0 | 0
Net Amounts of Assets Presented in the Balance Sheet | 68 | 37
Collateral | 0 | 0
Net Amount | 68 | 37
Other assets | Total return swaps | Not Designated as Hedging Instrument |  |
Derivative Assets |  |
Gross Amounts of Recognized Assets |  | 3,744
Gross Amounts Offset in the Balance Sheet |  | 0
Net Amounts of Assets Presented in the Balance Sheet |  | 3,744
Collateral |  | 3,601
Net Amount |  | 143
Other assets | Equity futures | Not Designated as Hedging Instrument |  |
Derivative Assets |  |
Gross Amounts of Recognized Assets |  | 291
Gross Amounts Offset in the Balance Sheet |  | 0
Net Amounts of Assets Presented in the Balance Sheet |  | 291
Collateral |  | 0
Net Amount |  | 291
Other liabilities | Interest rate futures | Not Designated as Hedging Instrument |  |
Derivative Liabilities |  |
Gross Amounts of Recognized Liabilities | 1,430 | 1,545
Gross Amounts Offset in the Balance Sheet | 863 | 122
Net Amounts of Liabilities Presented in the Balance Sheet | 567 | 1,423
Collateral Pledged | 567 | 1,423
Net Amount | 0 | 0
Other liabilities | Interest rate swaps | Not Designated as Hedging Instrument |  |
Derivative Liabilities |  |
Gross Amounts of Recognized Liabilities |  | 50
Gross Amounts Offset in the Balance Sheet |  | 0
Net Amounts of Liabilities Presented in the Balance Sheet |  | 50
Collateral Pledged |  | 50
Net Amount |  | 0
Other liabilities | Foreign currency forward contracts | Not Designated as Hedging Instrument |  |
Derivative Liabilities |  |
Gross Amounts of Recognized Liabilities | 12,791 | 3,808
Gross Amounts Offset in the Balance Sheet | 0 | 28
Net Amounts of Liabilities Presented in the Balance Sheet | 12,791 | 3,780
Collateral Pledged | 0 | 0
Net Amount | 12,791 | 3,780
Other liabilities | Foreign currency forward contracts | Not Designated as Hedging Instrument |  |
Derivative Liabilities |  |
Gross Amounts of Recognized Liabilities | 3,919 | 939
Gross Amounts Offset in the Balance Sheet | 69 | 622
Net Amounts of Liabilities Presented in the Balance Sheet | 3,850 | 317
Collateral Pledged | 1,053 | 0
Net Amount | 2,797 | 317
Other liabilities | Foreign currency forward contracts | Designated as Hedging Instrument |  |
Derivative Liabilities |  |
Gross Amounts of Recognized Liabilities | 5,152 | 1,818
Gross Amounts Offset in the Balance Sheet | 0 | 0
Net Amounts of Liabilities Presented in the Balance Sheet | 5,152 | 1,818
Collateral Pledged | 0 | 0
Net Amount | $ 5,152 | $ 1,818

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