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Real Estate Investments - Mortgage Debt Joint Venture (Details) | 12 Months Ended |  |
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Dec. 31, 2022 USD ($) property option state | Jan. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Real Estate |  |  |
Number of states in which properties are located | state | 36 |  |
Seaport Innovation LLC |  |  |
Real Estate |  |  |
Aggregate principal amount of mortgage debt |  |  | $ 620,000,000
Joint Venture |  |  |
Real Estate |  |  |
Number of states in which properties are located | state | 5 |  |
Coupon Rate | 4.10% |  |
Principal balance | $ 1,076,625,000 |  |
Aggregate principal amount of mortgage debt |  | $ 456,600,000 |
Seaport Innovation LLC | Joint Venture |  |  |
Real Estate |  |  |
Principal balance | $ 620,000,000 |  |
Seaport Innovation LLC | Joint Venture | Massachusetts |  |  |
Real Estate |  |  |
Encumbered properties (property) | property | 1 |  |
Coupon Rate | 3.53% |  |
Principal balance | $ 620,000,000 |  |
The LSMD Fund REIT LLC | Joint Venture |  |  |
Real Estate |  |  |
Encumbered properties (property) | property | 9 |  |
Number of states in which properties are located | state | 5 |  |
Coupon Rate | 3.46% |  |
Principal balance | $ 189,800,000 |  |
The LSMD Fund REIT LLC | Joint Venture | California |  |  |
Real Estate |  |  |
Encumbered properties (property) | property | 1 |  |
Coupon Rate | 5.90% |  |
Principal balance | $ 266,825,000 |  |
Number of extension options | option | 3 |  |
Extension term (years) | 1 year |  |
The LSMD Fund REIT LLC | Joint Venture | California | SOFR |  |  |
Real Estate |  |  |
Basis points per annum (as a percent) | 1.90% |  |
The LSMD Fund REIT LLC | Joint Venture | California | SOFR | Interest Rate Cap |  |  |
Real Estate |  |  |
Basis points per annum (as a percent) | 4.00% |  |

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