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Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2022
Fair Value Disclosures [Abstract] |
Estimated Fair Values of Financial Instruments | The following table presents the fair values of financial instruments:
| December 31,
| 2022 |  | 2021
| (Amounts in thousands)
Assets |  |  |
Investments | $ | 4,910,800 |  |  | $ | 5,142,589 |
Liabilities |  |  |
Options sold | 162 |  |  | 301 |
Notes payable | 375,631 |  |  | 413,378 |

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