Acquisition and Disposition of Hotel Properties (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jun. 23, 2017	Jun. 20, 2017
Real Estate Properties [Line Items]
Impairment loss	$ 3,191	$ 12,148	$ 4,240	$ 12,148
Gain on sale of hotel properties	290	0	14,877	40,326
Operating income from disposed properties	$ 0	$ 1,300	4,200	$ 4,200
Dumont NYC [Member]
Real Estate Properties [Line Items]
Consideration received for asset sold						$ 118,000
Impairment loss			1,000
Parking garage at Revere Boston Hotel [Member]
Real Estate Properties [Line Items]
Consideration received for asset sold					$ 95,000
Gain on sale of hotel properties			$ 13,900