Investment In Unconsolidated Joint Ventures (Summary Financial Information Related To Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Assets [Abstract]
Investment in hotel properties, net	$ 565,175		$ 565,175		$ 647,548
Other Assets	34,385		34,385		45,576
Total Assets	599,560		599,560		693,124
Liabilities and Equity [Abstract]
Mortgages and notes payable	347,404		347,404		432,173
Other liabilities	7,377		7,377		36,275
Equity [Abstract]
Hersha Hospitality Trust	92,812		92,812		119,892
Joint Venture Partner(s)	152,203		152,203		104,784
Accumulated Other Comprehensive Loss	(236)		(236)
Total Equity	244,779		244,779		224,676
Total Liabilities and Equity	599,560		599,560		$ 693,124
Statements of Operations [Abstract]
Room Revenue	25,812	$ 31,578	41,008	$ 43,958
Other Revenue	504	6,789	954	11,492
Operating Expenses	(11,270)	(20,681)	(20,356)	(33,565)
Lease Expense	(155)	(276)	(339)	(581)
Property Taxes and Insurance	(2,748)	(2,316)	(5,496)	(3,077)
General and Administrative	(1,372)	(2,116)	(2,527)	(3,348)
Depreciation and Amortization	(3,061)	(3,335)	(6,005)	(5,009)
Interest Expense	(5,188)	(4,658)	(10,099)	(6,264)
Acquisition Costs		(1,499)		(1,499)
Gain allocated to Noncontrolling Interests		(72)		(40)
Net Loss	$ 2,522	$ 3,414	$ (2,860)	$ 2,067