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Condensed Financial Information of Registrant (Schedule Of Condensed Financial Information Of Registrant, Balance Sheets) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Investments, at fair value: |  |  |
Fixed maturity securities (amortized cost $10,908; $0) | $ 4,088,311 | $ 4,031,523 |
Equity securities (cost $35,041; $69,371) | 699,552 | 970,939 |
Short-term investments (cost $27,057; $20,441) | 122,937 | 140,127 |
Total investments | 4,910,800 | 5,142,589 |
Cash | 289,776 | 335,557 |
Accrued investment income | 52,474 | 43,299 |
Deferred income taxes | 42,903 | 0 |
Other assets | 49,628 | 27,970 |
Total assets | 6,514,188 | 6,772,472 |
Liabilities |  |  |
Notes payable | 398,330 | 372,931 |
Deferred income taxes | 0 | 53,569 |
Other liabilities | 289,568 | 255,760 |
Total liabilities | 4,992,057 | 4,632,191 |
Shareholders’ equity: |  |  |
Common stock | 98,947 | 98,943 |
Retained earnings | 1,423,184 | 2,041,338 |
Total shareholders’ equity | 1,522,131 | 2,140,281 | $ 2,032,597
Total liabilities and shareholders’ equity | 6,514,188 | 6,772,472 |
Amortized cost on fixed maturities trading investments | 4,226,790 | 3,909,780 |
Cost - equity security trading investments | 668,843 | 754,536 |
Cost - short-term investments | 123,928 | 141,206 |
Parent Company |  |  |
Investments, at fair value: |  |  |
Fixed maturity securities (amortized cost $10,908; $0) | 10,907 | 0 |
Equity securities (cost $35,041; $69,371) | 51,416 | 111,399 |
Short-term investments (cost $27,057; $20,441) | 27,059 | 20,441 |
Investment in subsidiaries | 1,833,372 | 2,332,717 |
Total investments | 1,922,754 | 2,464,557 |
Cash | 6,218 | 53,738 |
Accrued investment income | 149 | 16 |
Amounts receivable from affiliates | 516 | 457 |
Current income taxes | 55,777 | 20,738 |
Deferred income taxes | 1,072 | 0 |
Income tax receivable from affiliates | 12,865 | 14,202 |
Other assets | 1,493 | 771 |
Total assets | 2,000,844 | 2,554,479 |
Liabilities |  |  |
Notes payable | 398,330 | 372,931 |
Amounts payable to affiliates | 90 | 0 |
Income tax payable to affiliates | 75,079 | 25,626 |
Deferred income taxes | 0 | 10,811 |
Other liabilities | 5,214 | 4,830 |
Total liabilities | 478,713 | 414,198 |
Shareholders’ equity: |  |  |
Common stock | 98,947 | 98,943 |
Retained earnings | 1,423,184 | 2,041,338 |
Total shareholders’ equity | 1,522,131 | 2,140,281 |
Total liabilities and shareholders’ equity | 2,000,844 | 2,554,479 |
Amortized cost on fixed maturities trading investments | 10,908 | 0 |
Cost - equity security trading investments | 35,041 | 69,371 |
Cost - short-term investments | $ 27,057 | $ 20,441 |

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