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Real Estate Investments - Schedule of Disposal Groups (Details) $ in Thousands | 1 Months Ended | 12 Months Ended |  |
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Apr. 30, 2021 USD ($) ft² building | Feb. 28, 2021 USD ($) ft² building | Dec. 31, 2020 USD ($) ft² building property unit | Nov. 30, 2020 USD ($) building unit | Oct. 31, 2020 USD ($) building unit | Sep. 30, 2020 USD ($) ft² building | Aug. 31, 2020 USD ($) building unit | Jul. 31, 2020 USD ($) ft² building | Jun. 30, 2020 USD ($) ft² building | Apr. 30, 2020 USD ($) unit building | Mar. 31, 2020 USD ($) ft² building | Feb. 29, 2020 USD ($) | Jan. 31, 2020 USD ($) ft² building | Dec. 31, 2021 USD ($) building | Dec. 31, 2020 USD ($) ft² building property unit | Dec. 31, 2022 property | Feb. 28, 2020 ft² building
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 379 |
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  | 27 |  |  |  |  |  |  |  |  |  |  | 5 | 27 |  |
Sales Price |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 104,500 | $ 152,893 |  |
Gain (loss) on Sale |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 30,638 | $ 6,262 |  |
Medical Office |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | property |  |  | 7 |  |  |  |  |  |  |  |  |  |  |  | 7 |  |
Medical Office | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | property |  |  | 4 |  |  |  |  |  |  |  |  |  |  |  | 4 |  |
Medical Office | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Pennsylvania |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1
Area of real estate properties (in square feet) | ft² |  | 92,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50,000
Sales Price |  | $ 9,000 |  |  |  |  |  |  |  |  |  | $ 2,900 |  |  |  |  |
Gain (loss) on Sale |  | $ (122) |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |
Medical Office | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Louisiana |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  |  |  |  |  |  |  |  |  |  |  | 6 |  |  |  |
Area of real estate properties (in square feet) | ft² |  |  |  |  |  |  |  |  |  |  |  |  | 40,575 |  |  |  |
Sales Price |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,925 |  |  |  |
Gain (loss) on Sale |  |  |  |  |  |  |  |  |  |  |  |  | $ (81) |  |  |  |
Medical Office | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Texas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  |  |  |  |  |  | 1 |  |  | 1 |  |  |  |  |  |
Area of real estate properties (in square feet) | ft² |  |  |  |  |  |  |  | 6,849 |  |  | 70,229 |  |  |  |  |  |
Sales Price |  |  |  |  |  |  |  | $ 2,072 |  |  | $ 8,779 |  |  |  |  |  |
Gain (loss) on Sale |  |  |  |  |  |  |  | $ (30) |  |  | $ 2,863 |  |  |  |  |  |
Medical Office | Disposal Group, Disposed of by Sale, Not Discontinued Operations | South Carolina |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |
Area of real estate properties (in square feet) | ft² |  |  |  |  |  |  |  |  | 49,242 |  |  |  |  |  |  |  |
Sales Price |  |  |  |  |  |  |  |  | $ 3,550 |  |  |  |  |  |  |  |
Gain (loss) on Sale |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |
Medical Office | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Connecticut |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |
Area of real estate properties (in square feet) | ft² |  |  |  |  |  |  |  | 32,162 |  |  |  |  |  |  |  |  |
Sales Price |  |  |  |  |  |  |  | $ 625 |  |  |  |  |  |  |  |  |
Gain (loss) on Sale |  |  |  |  |  |  |  | $ (25) |  |  |  |  |  |  |  |  |
Medical Office | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Mississippi |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |
Area of real estate properties (in square feet) | ft² |  |  |  |  |  | 78,747 |  |  |  |  |  |  |  |  |  |  |
Sales Price |  |  |  |  |  | $ 7,250 |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on Sale |  |  |  |  |  | $ (114) |  |  |  |  |  |  |  |  |  |  |
Medical Office | Disposal Group, Disposed of by Sale, Not Discontinued Operations | New York |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  | 1 |  |
Area of real estate properties (in square feet) | ft² |  |  | 64,060 |  |  |  |  |  |  |  |  |  |  |  | 64,060 |  |
Sales Price |  |  | $ 3,875 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on Sale |  |  | $ (273) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Medical Office and Life Science | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Florida |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Area of real estate properties (in square feet) | ft² | 263,656 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales Price | $ 95,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on Sale | $ 30,760 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IL / AL | Disposal Group, Disposed of by Sale, Not Discontinued Operations | California |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |
Number of units in real estate property | unit |  |  |  |  |  |  |  |  |  | 599 |  |  |  |  |  |  |
Sales Price |  |  |  |  |  |  |  |  |  | $ 47,000 |  |  |  |  |  |  |
Gain (loss) on Sale |  |  |  |  |  |  |  |  |  | $ (256) |  |  |  |  |  |  |
AL | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Mississippi |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |
Number of units in real estate property | unit |  |  |  |  |  |  | 116 |  |  |  |  |  |  |  |  |  |
Sales Price |  |  |  |  |  |  | $ 2,500 |  |  |  |  |  |  |  |  |  |
Gain (loss) on Sale |  |  |  |  |  |  | $ (42) |  |  |  |  |  |  |  |  |  |
AL | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Various |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |
Number of units in real estate property | unit |  |  |  |  | 239 |  |  |  |  |  |  |  |  |  |  |  |
Sales Price |  |  |  |  | $ 46,000 |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on Sale |  |  |  |  | $ 4,292 |  |  |  |  |  |  |  |  |  |  |  |
AL | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Nebraska |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of units in real estate property | unit |  |  |  | 131 |  |  |  |  |  |  |  |  |  |  |  |  |
Sales Price |  |  |  | $ 3,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on Sale |  |  |  | $ (26) |  |  |  |  |  |  |  |  |  |  |  |  |
Life Science | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Ohio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  | 2 |  |
Area of real estate properties (in square feet) | ft² |  |  | 232,016 |  |  |  |  |  |  |  |  |  |  |  | 232,016 |  |
Sales Price |  |  | $ 7,917 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on Sale |  |  | $ 257 |  |  |  |  |  |  |  |  |  |  |  |  |  |
SNF / AL | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Wisconsin |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Properties | building |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  | 3 |  |
Number of units in real estate property | unit |  |  | 537 |  |  |  |  |  |  |  |  |  |  |  | 537 |  |
Sales Price |  |  | $ 11,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on Sale |  |  | $ (303) |  |  |  |  |  |  |  |  |  |  |  |  |  |

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