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Schedule II Financial Information of Registrant - Parent Company Statement 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 | $ 38,115 | $ 36,255 | $ 38,723 | $ 40,944 | $ 41,432 | $ 42,756 | $ 43,761 | $ 43,847 | $ 154,037 | $ 171,796 | $ 152,475
Net gains (losses) on investments and other financial instruments | 17,376 | 17,652 | 47,276 | (22,027) | 4,257 | 13,009 | 12,540 | 21,913 | 60,277 | 51,719 | (42,476)
Other income |  |  |  |  |  |  |  |  | 3,597 | 3,495 | 4,028
Total revenues |  |  |  |  |  |  |  |  | 1,438,617 | 1,526,955 | 1,273,006
Expenses: |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  | 0 | (5,940) | (16,798) | 0 | 0 | (22,738) | 0
Interest expense |  |  |  |  |  |  |  |  | 71,150 | 56,310 | 61,490
Total expenses (Note B) |  |  |  |  |  |  |  |  | 959,176 | 677,962 | 588,820
Pretax income |  |  |  |  |  |  |  |  | 479,441 | 848,993 | 684,186
Income tax benefit |  |  |  |  |  |  |  |  | 85,815 | 176,684 | 78,175
Net income | 148,013 | 135,103 | (29,951) | 140,461 | 161,184 | 173,438 | 166,730 | 170,957 | 393,626 | 672,309 | 606,011
Other comprehensive income (loss), net of tax |  |  |  |  |  |  |  |  | 153,237 | 171,408 | (86,953)
Comprehensive income |  |  |  |  |  |  |  |  | 546,863 | 843,717 | 519,058
Other operating expenses | $ 81,641 | $ 69,377 | $ 60,582 | $ 69,110 | $ 80,894 | $ 76,384 | $ 70,046 | $ 78,805 | 280,710 | 306,129 | 280,818
Parent Company |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |
Net Investment Income |  |  |  |  |  |  |  |  | 19,459 | 19,751 | 21,294
Net gains (losses) on investments and other financial instruments |  |  |  |  |  |  |  |  | 5,682 | 12,863 | (470)
Other income |  |  |  |  |  |  |  |  | 101 | 218 | 0
Total revenues |  |  |  |  |  |  |  |  | 25,242 | 32,832 | 20,824
Expenses: |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  |  |  | 0 | 22,738 | 0
Interest expense |  |  |  |  |  |  |  |  | 0 | 0 | 17,805
Total expenses (Note B) |  |  |  |  |  |  |  |  | 2,619 | 22,738 | 17,805
Pretax income |  |  |  |  |  |  |  |  | 22,623 | 10,094 | 3,019
Income tax benefit |  |  |  |  |  |  |  |  | (3,165) | (19,997) | (3,319)
Equity in net income of affiliates |  |  |  |  |  |  |  |  | 367,838 | 642,218 | 599,673
Net income |  |  |  |  |  |  |  |  | 393,626 | 672,309 | 606,011
Other comprehensive income (loss), net of tax |  |  |  |  |  |  |  |  | 153,237 | 171,408 | (86,953)
Comprehensive income |  |  |  |  |  |  |  |  | 546,863 | 843,717 | 519,058
Other operating expenses |  |  |  |  |  |  |  |  | $ 2,619 | $ 0 | $ 0

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