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Real Estate Properties - Acquisitions (Details) $ in Thousands | 1 Months Ended | 2 Months Ended | 3 Months Ended
--- | --- | --- | ---
Mar. 31, 2018 USD ($) ft² building property | Feb. 28, 2018 USD ($) living_unit community property | Jan. 31, 2018 USD ($) ft² living_unit building community property | Nov. 30, 2017 property | Feb. 28, 2018 USD ($) living_unit property | Mar. 31, 2018 USD ($) ft² building property | Mar. 31, 2017 USD ($)
Real Estate Properties |  |  |  |  |  |  |
Assumed Debt |  |  |  |  |  | $ 27,798 | $ 0
Acquisition | MOBs |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties | property |  |  |  |  |  | 4 |
Number of buildings acquired | building |  |  |  |  |  | 4 |
Area of real estate properties (in square feet) | ft² | 535,000 |  |  |  |  | 535,000 |
Cash Paid plus Assumed Debt |  |  |  |  |  | $ 114,973 |
Acquired Real Estate Intangible Assets | $ 29,527 |  |  |  |  | 29,527 |
Assumed Debt |  |  |  |  |  | $ 11,050 |
Acquisition | Kansas, Missouri And California | MOBs |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties | property |  |  | 3 |  |  |  |
Number of buildings acquired | building |  |  | 3 |  |  |  |
Area of real estate properties (in square feet) | ft² |  |  | 400,000 |  |  |  |
Cash Paid plus Assumed Debt |  |  | $ 91,698 |  |  |  |
Acquired Real Estate Intangible Assets |  |  | 20,220 |  |  |  |
Assumed Debt |  |  | 0 |  |  |  |
Acquisition | Virginia | MOBs |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties | property | 1 |  |  |  |  |  |
Number of buildings acquired | building | 1 |  |  |  |  |  |
Area of real estate properties (in square feet) | ft² | 135,000 |  |  |  |  | 135,000 |
Cash Paid plus Assumed Debt | $ 23,275 |  |  |  |  |  |
Acquired Real Estate Intangible Assets | 9,307 |  |  |  |  | $ 9,307 |
Assumed Debt | 11,050 |  |  |  |  |  |
Acquisition | Land | MOBs |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  |  |  |  |  | 19,736 |
Acquisition | Land | Kansas, Missouri And California | MOBs |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  |  | 16,873 |  |  |  |
Acquisition | Land | Virginia | MOBs |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment | 2,863 |  |  |  |  |  |
Acquisition | Building and Improvements | MOBs |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  |  |  |  |  | $ 65,710 |
Acquisition | Building and Improvements | Kansas, Missouri And California | MOBs |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  |  | $ 54,605 |  |  |  |
Acquisition | Building and Improvements | Virginia | MOBs |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment | $ 11,105 |  |  |  |  |  |
Five Star | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties | property |  |  |  | 6 |  |  |
Five Star | Tennessee | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties | community |  |  | 1 |  |  |  |
Number of acquired private pay independent living units | living_unit |  |  | 88 |  |  |  |
Five Star | Arizona | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties | community |  | 1 |  |  |  |  |
Number of acquired private pay independent living units | living_unit |  | 127 |  |  |  |  |
Assumed Debt |  | $ 16,748 |  |  |  |  |
Five Star | Acquisition | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties | property |  |  |  |  | 2 |  |
Number of acquired private pay independent living units | living_unit |  |  |  |  | 215 |  |
Cash Paid plus Assumed Debt |  |  |  |  | $ 42,490 |  |
Acquired Real Estate Intangible Assets |  | $ 7,646 |  |  | 7,646 |  |
Assumed Debt |  |  |  |  | 16,748 |  |
Premium on Assumed Debt |  |  |  |  | (1,359) |  |
Five Star | Acquisition | Tennessee | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties | property |  |  | 1 |  |  |  |
Cash Paid plus Assumed Debt |  |  | $ 19,868 |  |  |  |
Acquired Real Estate Intangible Assets |  |  | 3,195 |  |  |  |
Assumed Debt |  |  | 0 |  |  |  |
Premium on Assumed Debt |  |  | 0 |  |  |  |
Five Star | Acquisition | Arizona | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties | property |  | 1 |  |  |  |  |
Cash Paid plus Assumed Debt |  | $ 22,622 |  |  |  |  |
Acquired Real Estate Intangible Assets |  | 4,451 |  |  | 4,451 |  |
Assumed Debt |  | 16,748 |  |  |  |  |
Premium on Assumed Debt |  | (1,359) |  |  |  |  |
Five Star | Acquisition | Land | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  |  |  |  | 2,597 |  |
Five Star | Acquisition | Land | Tennessee | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  |  | 580 |  |  |  |
Five Star | Acquisition | Land | Arizona | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  | 2,017 |  |  |  |  |
Five Star | Acquisition | Building and Improvements | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  |  |  |  | 32,007 |  |
Five Star | Acquisition | Building and Improvements | Tennessee | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  |  | 14,884 |  |  |  |
Five Star | Acquisition | Building and Improvements | Arizona | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  | 17,123 |  |  |  |  |
Five Star | Acquisition | FF&E | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  |  |  |  | $ 1,599 |  |
Five Star | Acquisition | FF&E | Tennessee | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  |  | $ 1,209 |  |  |  |
Five Star | Acquisition | FF&E | Arizona | Senior Living Communities |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Real estate properties acquired, property plant and equipment |  | $ 390 |  |  |  |  |
Lease Agreements | Acquisition | MOBs |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Weighted average amortization period |  |  |  |  |  | 5 years 9 months 18 days |

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