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Real Estate Joint Ventures (Consolidated Real Estate Joint Ventures) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Schedule of Equity Method Investments [Line Items] |  |
Total Assets | $ 4,077,023 | $ 3,854,453
Total Liabilities | 2,357,881 | $ 2,105,777
Variable Interest Entity, Primary Beneficiary |  |
Schedule of Equity Method Investments [Line Items] |  |
Total Assets | 665,441 |
Encumbered Assets | 313,322 |
Total Liabilities | $ 243,589 |
Variable Interest Entity, Primary Beneficiary | LW Redstone Company, LLC |  |
Schedule of Equity Method Investments [Line Items] |  |
Nominal Ownership % | 85.00% |
Total Assets | $ 403,448 |
Encumbered Assets | 92,590 |
Total Liabilities | $ 100,334 |
Variable Interest Entity, Primary Beneficiary | Stevens Investors, LLC |  |
Schedule of Equity Method Investments [Line Items] |  |
Nominal Ownership % | 95.00% |
Total Assets | $ 161,735 |
Encumbered Assets | 158,286 |
Total Liabilities | $ 88,028 |
Variable Interest Entity, Primary Beneficiary | M Square Associates, LLC |  |
Schedule of Equity Method Investments [Line Items] |  |
Nominal Ownership % | 50.00% |
Total Assets | $ 100,258 |
Encumbered Assets | 62,446 |
Total Liabilities | $ 55,227 |

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