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Investments (Other Investment Portfolio by Strategy and the Remaining Commitment Amount Associated With Each Strategy) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Carrying Value |  | $ 409,032 | $ 266,322
Private Equity [Member] |  |  |
Carrying Value |  | 273,070 | 157,276
Remaining Commitment |  | 99,734 | 100,905
Maximum Exposure to Loss | [1] | 372,804 | 258,181
Private Credit Funds [Member] |  |  |
Carrying Value |  | 63,138 | 54,017
Remaining Commitment |  | 92,674 | 98,330
Maximum Exposure to Loss | [1] | 155,812 | 152,347
Real Assets [Member] |  |  |
Carrying Value |  | 23,524 | 19,659
Remaining Commitment |  | 22,579 | 16,493
Maximum Exposure to Loss | [1] | 46,103 | 36,152
Alternative Investments [Member] |  |  |
Carrying Value |  | 359,732 | 230,952
Remaining Commitment |  | 214,987 | 215,728
Maximum Exposure to Loss | [1] | 574,719 | 446,680
Other Securities [Member] |  |  |
Carrying Value |  | 49,300 | 35,370
Remaining Commitment |  | 0 | 0
Maximum Exposure to Loss | [1] | 49,300 | 35,370
Other Investment Portfolio [Member] |  |  |
Carrying Value |  | 409,032 | 266,322
Remaining Commitment |  | 214,987 | 215,728
Maximum Exposure to Loss | [1] | $ 624,019 | $ 482,050
[1] | In addition to the amounts in this table, previously recognized tax credits are subject to the risk of recapture. We do not consider this significant and therefore do not include in this table.

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