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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Assets
Investment in Hotel Properties, Net	$ 1,883,335		$ 1,883,335		$ 1,975,973
Other Assets	22,895		22,895		38,177
Total Assets	2,025,654		2,025,654		2,122,428
Liabilities and Equity
Mortgages and Notes Payable	331,409		331,409		332,280
Equity:
Hersha Hospitality Trust	657,312		657,312		807,657
Joint Venture Partner(s)	52,279		52,279		64,144
Accumulated Other Comprehensive (Loss) Income	(22,747)		(22,747)		1,010
Liabilities and Equity	2,025,654		2,025,654		2,122,428
Statement of Operations [Abstract]
Other Revenue	25	$ 76	253	$ 214
Lease Expense	(1,236)	(1,421)	(3,754)	(4,046)
Property Taxes and Insurance	(10,597)	(10,717)	(30,508)	(29,111)
General and Administrative	(4,397)	(5,613)	(14,418)	(19,313)
Depreciation and Amortization	(24,055)	(24,092)	(72,565)	(72,184)
Interest Expense	(13,350)	(12,935)	(39,838)	(39,158)
Net (Loss) Income	(48,173)	507	(145,925)	(1,816)
Room Revenue
Statement of Operations [Abstract]
Hotel Operating Revenues:	27,546	108,909	113,768	319,374
Operating Expenses	(7,436)	(24,000)	(30,150)	(70,103)
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Assets
Investment in Hotel Properties, Net	585,369		585,369		579,287
Other Assets	24,381		24,381		33,891
Total Assets	609,750		609,750		613,178
Liabilities and Equity
Mortgages and Notes Payable	449,952		449,952		430,282
Other Liabilities	27,646		27,646		19,185
Equity:
Hersha Hospitality Trust	6,859		6,859		9,588
Joint Venture Partner(s)	125,657		125,657		154,998
Accumulated Other Comprehensive (Loss) Income	(364)		(364)		(875)
Total Equity	132,152		132,152		163,711
Liabilities and Equity	609,750		609,750		$ 613,178
Statement of Operations [Abstract]
Other Revenue	122	604	909	1,848
Operating Expenses	(3,621)	(12,142)	(15,234)	(34,063)
Lease Expense	(170)	(164)	(524)	(529)
Property Taxes and Insurance	(3,282)	(3,161)	(9,720)	(9,264)
General and Administrative	(567)	(1,603)	(2,083)	(4,314)
Depreciation and Amortization	(3,972)	(3,731)	(11,812)	(11,085)
Interest Expense	(5,487)	(7,038)	(17,356)	(21,381)
Net (Loss) Income	(12,942)	(2,137)	(34,854)	(10,344)
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Room Revenue
Statement of Operations [Abstract]
Hotel Operating Revenues:	$ 4,035	$ 25,098	$ 20,966	$ 68,444