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Real Estate Properties - Dispositions (Details) - Hotel
$ in Thousands
3 Months Ended 6 Months Ended
Aug. 01, 2017
USD ($)
room
Sep. 30, 2017
USD ($)
room
Jun. 30, 2017
USD ($)
hotel
Chandler, AZ, Bloomington, MN, and Naperville, IL      
Real Estate [Line Items]      
Number of properties sold | hotel     3
Properties held for sale     $ 14,090
Chandler, AZ | Subsequent event      
Real Estate [Line Items]      
Number of rooms sold | room 159    
Proceeds from sale of property held-for-sale $ 9,500    
Naperville, IL | Forecast      
Real Estate [Line Items]      
Number of rooms sold | room   143  
Sales of real estate agreed upon price   $ 6,600