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Condensed Financial Information of Registrant (Schedule Of Condensed Financial Information Of Registrant, Statements Of Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Revenues: |  |  |  |  |  |  |  |  |  |  |
Net investment income |  |  |  |  |  |  |  |  | $ 134,858 | $ 141,263 | $ 135,838
Net realized investment gains (losses) |  |  |  |  |  |  |  |  | 85,731 | 222,793 | (133,520)
Other |  |  |  |  |  |  |  |  | 8,287 | 9,044 | 9,275
Total revenues |  |  |  |  |  |  |  |  | 3,784,511 | 3,972,518 | 3,380,004
Expenses: |  |  |  |  |  |  |  |  |  |  |
Other operating expenses |  |  |  |  |  |  |  |  | 285,831 | 269,305 | 244,630
Interest |  |  |  |  |  |  |  |  | 17,048 | 17,035 | 17,036
Total expenses |  |  |  |  |  |  |  |  | 3,326,010 | 3,594,449 | 3,410,619
Income (loss) before income taxes | $ 207,110 | $ 146,631 | $ 285,466 | $ (180,705) | $ 28,465 | $ 80,840 | $ 101,595 | $ 167,169 | 458,501 | 378,069 | (30,615)
Income tax expense (benefit) |  |  |  |  |  |  |  |  | 83,894 | 57,982 | (24,887)
Net income (loss) | $ 166,743 | $ 118,857 | $ 228,211 | $ (139,204) | $ 31,688 | $ 69,282 | $ 83,250 | $ 135,867 | 374,607 | 320,087 | (5,728)
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |
Net investment income |  |  |  |  |  |  |  |  | 3,323 | 3,735 | 4,661
Net realized investment gains (losses) |  |  |  |  |  |  |  |  | 9,575 | 31,682 | (10,797)
Other |  |  |  |  |  |  |  |  | 0 | 5 | 2
Total revenues |  |  |  |  |  |  |  |  | 12,898 | 35,422 | (6,134)
Expenses: |  |  |  |  |  |  |  |  |  |  |
Other operating expenses |  |  |  |  |  |  |  |  | 3,054 | 2,592 | 2,343
Interest |  |  |  |  |  |  |  |  | 17,035 | 17,036 | 17,036
Total expenses |  |  |  |  |  |  |  |  | 20,089 | 19,628 | 19,379
Income (loss) before income taxes |  |  |  |  |  |  |  |  | (7,191) | 15,794 | (25,513)
Income tax expense (benefit) |  |  |  |  |  |  |  |  | 600 | 2,816 | (5,144)
(Loss) income before equity in net income of subsidiaries |  |  |  |  |  |  |  |  | (7,791) | 12,978 | (20,369)
Equity in net income of subsidiaries |  |  |  |  |  |  |  |  | 382,398 | 307,109 | 14,641
Net income (loss) |  |  |  |  |  |  |  |  | $ 374,607 | $ 320,087 | $ (5,728)

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