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Single-Family Properties - Narrative (Details)
 3 Months Ended
Mar. 31, 2018
USD ($)
property
Mar. 31, 2017
USD ($)
property
Dec. 31, 2017
USD ($)
Property Subject to or Available for Operating Lease      
Proceeds from the sale of real estate properties $ 11,967,000 $ 31,306,000  
Single Family Homes      
Property Subject to or Available for Operating Lease      
Real estate investment properties unrecorded deed 4,700,000   $ 44,200,000
Depreciation expense $ 75,400,000 $ 68,700,000  
Number of real estate properties sold | property 103 504  
Proceeds from the sale of real estate properties $ 11,500,000 $ 24,000,000  
Net gain (loss) on sale of single-family properties and other 2,100,000 (1,000,000)  
Proceeds from sale of land 500,000    
Gain (loss) on land sold $ 100,000    
Note receivable   7,000,000  
Discount of note receivable   $ 1,500,000