Hotel Management Agreements and Leases - Marriott No. 234 (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($) travelcenter	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) travelcenter	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Management Agreements and Leases [Line Items]
Security deposit balance		$ 88,524		$ 88,524		$ 53,579
Capital improvements from leased facilities, funded				122,239	$ 172,627
Hotels
Management Agreements and Leases [Line Items]
Amount by which the cash flow available to pay the entity's minimum rent or return was more than the minimum amount		$ 35,123	$ 28,969	$ 80,867	65,973
Marriott No. 234 agreement | Hotels
Management Agreements and Leases [Line Items]
Number of real estate properties leased or managed | travelcenter		68		68
Operating agreement annual rent and return				$ 106,243
Aggregate amount of replenished available security deposit				11,198
Security deposit balance		$ 17,449		$ 17,449
Guaranty payments threshold as percentage of minimum returns				90.00%
Guarantee provided to the entity, remaining amount		30,672		$ 30,672
Percentage increase in minimum returns				9.00%
Minimum | Marriott No. 234 agreement | Hotels
Management Agreements and Leases [Line Items]
Realized returns and rents		$ 26,571	$ 26,553	$ 79,682	$ 79,586
Maximum | Marriott No. 234 agreement | Hotels
Management Agreements and Leases [Line Items]
Amount by which the cash flow available to pay the entity's minimum rent or return was more than the minimum amount				$ 64,700
Forecast | Marriott No. 234 agreement
Management Agreements and Leases [Line Items]
Capital improvements from leased facilities, funded	$ 9,000