Investment In Unconsolidated Joint Ventures (Summary Financial Information Related To Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Assets [Abstract]
Investment in hotel properties, net	$ 563,409		$ 563,409		$ 647,548
Other Assets	42,331		42,331		45,576
Total Assets	605,740		605,740		693,124
Liabilities and Equity [Abstract]
Mortgages and notes payable	351,906		351,906		432,173
Other liabilities	8,238		8,238		36,275
Equity [Abstract]
Hersha Hospitality Trust	90,090		90,090		119,892
Joint Venture Partner(s)	155,763		155,763		104,784
Accumulated Other Comprehensive Loss	(257)		(257)
Total Equity	245,596		245,596		224,676
Total Liabilities and Equity	605,740		605,740		$ 693,124
Statements of Operations [Abstract]
Room Revenue	25,837	$ 37,757	66,845	$ 81,715
Other Revenue	499	5,718	1,453	17,213
Operating Expenses	(11,632)	(23,433)	(31,988)	(56,999)
Lease Expense	(164)	(278)	(504)	(860)
Property Taxes and Insurance	(2,948)	(3,326)	(8,444)	(6,404)
General and Administrative	(1,428)	(2,636)	(3,956)	(5,985)
Depreciation and Amortization	(3,152)	(4,040)	(9,157)	(9,049)
Interest Expense	(5,375)	(6,146)	(15,473)	(12,410)
Acquisition Costs				(1,499)
Loss Allocated to Noncontrolling Interests		(10)		(50)
Net Income (Loss)	$ 1,637	$ 3,606	$ (1,224)	$ 5,672