XML 153 R122.htm IDEA: XBRL DOCUMENT v3.10.0.1
Subsequent Events - Mortgage Notes Receivable (Details)
$ in Thousands
12 Months Ended
Jan. 15, 2019
USD ($)
mortgage_note
Dec. 31, 2018
USD ($)
mortgage_note
Dec. 31, 2017
USD ($)
Subsequent Event [Line Items]      
Net Carrying Value | $   $ 10,164 $ 20,294
Mortgage notes receivable [Member]      
Subsequent Event [Line Items]      
Number of notes receivable held for sale   3  
Number of mortgage notes receivable   5  
Mortgage notes receivable [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Number of notes receivable held for sale 4    
Number of mortgage notes receivable 1    
Gross sales price of mortgage notes receivable | $ $ 8,300