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Summary of Significant Accounting Policies (Income Taxes) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Tax Treatment Of Dividend |  |  |
Internal taxable income distribution policy (in percentage) | 100.00% |  |
Estimated taxable income net | $ 64,960 | $ 101,184 | $ 81,375
Net basis difference of assets and liabilities between tax basis and GAAP basis | $ 137,734 |  |
Ordinary Income |  |  |
Tax Treatment Of Dividend |  |  |
Payments of dividends net percent | 100.00% | 58.30% | 100.00%
Long Term Capital Gain |  |  |
Tax Treatment Of Dividend |  |  |
Payments of dividends net percent |  | 41.70% |

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