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Summary of Significant Accounting Policies - Owned Properties (Details)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
USD ($)
item
Dec. 31, 2019
USD ($)
item
Owned Properties      
Number of beds damaged | item   114 170
Gain from property insurance proceeds | $   $ 373,000 $ 2,111,000
Computer Equipment | Minimum      
Owned Properties      
Useful life 3 years    
Computer Equipment | Maximum      
Owned Properties      
Useful life 5 years    
Furniture and Fixtures | Minimum      
Owned Properties      
Useful life 5 years    
Furniture and Fixtures | Maximum      
Owned Properties      
Useful life 15 years    
Building | Minimum      
Owned Properties      
Useful life 35 years    
Building | Maximum      
Owned Properties      
Useful life 50 years    
Site Improvements | Minimum      
Owned Properties      
Useful life 10 years    
Site Improvements | Maximum      
Owned Properties      
Useful life 20 years    
Building Improvements | Minimum      
Owned Properties      
Useful life 10 years    
Building Improvements | Maximum      
Owned Properties      
Useful life 50 years