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Impairment of Real Estate Investments, Assets Held for Sale, Net and Asset Sales (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2022
USD ($)
facility
Sep. 30, 2022
USD ($)
facility
Dec. 31, 2023
USD ($)
facility
Dec. 31, 2022
USD ($)
facility
Dec. 31, 2021
USD ($)
Jun. 01, 2023
facility
Real Estate [Line Items]            
Impairment of real estate investments     $ 36,301,000 $ 79,062,000 $ 0  
Number of facilities | facility     226     1
Real estate investment property, at cost $ 1,821,902,000   $ 2,005,077,000 1,821,902,000    
Real estate investments, net 1,421,410,000   1,567,119,000 1,421,410,000    
Skilled Nursing Facility            
Real Estate [Line Items]            
Impairment of real estate investments   $ 1,700,000 $ 8,000,000      
Number of facilities | facility   1 1      
Real estate investment property, at cost   $ 2,800,000 $ 8,700,000      
Real estate investments, net   1,100,000 $ 700,000      
Level 3 | Facilities Held For Sale            
Real Estate [Line Items]            
Number of facilities | facility     14      
Level 3 | Skilled Nursing Facility            
Real Estate [Line Items]            
Prices per unit input   $ 20,000 $ 7,000      
Valuation, Market Approach | Level 3 | Minimum            
Real Estate [Line Items]            
Prices per unit input 20,000   8,000 20,000    
Valuation, Market Approach | Level 3 | Maximum            
Real Estate [Line Items]            
Prices per unit input 85,000   85,000 85,000    
Valuation, Market Approach | Level 3 | Weighted Average            
Real Estate [Line Items]            
Prices per unit input $ 55,000   20,000 55,000    
Held for Sale            
Real Estate [Line Items]            
Impairment of real estate investments     26,800,000 14,400,000    
Held For Investment            
Real Estate [Line Items]            
Impairment of real estate investments     8,000,000 19,700,000    
Held For Investment | Assisted living            
Real Estate [Line Items]            
Impairment of real estate investments       $ 1,400,000    
Number of facilities | facility 9 1   9    
Real estate investment property, at cost $ 50,800,000     $ 50,800,000    
Amount transferred out of assets held-for-sale $ 47,800,000 $ 4,900,000        
Held For Investment | Nine Assisted Living Facility            
Real Estate [Line Items]            
Impairment of real estate investments       $ 16,600,000    
Held For Investment | Valuation, Market Approach | Level 3 | Assisted living            
Real Estate [Line Items]            
Prices per unit input   $ 125,000        
Held For Investment | Valuation Technique, Terminal Capitalization Rate | Level 3 | Minimum | Assisted living            
Real Estate [Line Items]            
Assets held-for-sale, measurement input 0.075     0.075    
Held For Investment | Valuation Technique, Terminal Capitalization Rate | Level 3 | Maximum | Assisted living            
Real Estate [Line Items]            
Assets held-for-sale, measurement input 0.0875     0.0875    
Held For Investment | Discounted cash flow | Level 3 | Minimum | Assisted living            
Real Estate [Line Items]            
Assets held-for-sale, measurement input 0.085     0.085    
Held For Investment | Discounted cash flow | Level 3 | Maximum | Assisted living            
Real Estate [Line Items]            
Assets held-for-sale, measurement input 0.0975     0.0975    
Disposed of by Sale            
Real Estate [Line Items]            
Impairment of real estate investments     $ 1,500,000 $ 45,000,000