INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Summary of Unconsolidated Joint Ventures Balance Sheet) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Assets
Investment in Hotel Properties, Net	$ 1,681,563		$ 1,681,563		$ 1,784,838
Other Assets	22,642		22,642		15,494
Total Assets	1,848,686		1,848,686		1,980,988
Liabilities and Equity
Mortgages and Notes Payable	305,044		305,044		330,848
Equity:
Hersha Hospitality Trust	569,281		569,281		623,003
Joint Venture Partner(s)	48,092		48,092		49,246
Accumulated Other Comprehensive Loss	(8,853)		(8,853)		(19,275)
Liabilities and Equity	1,848,686		1,848,686		1,980,988
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Assets
Investment in Hotel Properties, Net	65,315		65,315		581,452
Other Assets	16,322		16,322		32,048
Total Assets	81,637		81,637		613,500
Liabilities and Equity
Mortgages and Notes Payable	65,618		65,618		452,284
Other Liabilities	16,035		16,035		42,197
Equity:
Hersha Hospitality Trust	4,166		4,166		5,699
Joint Venture Partner(s)	(4,182)		(4,182)		113,452
Accumulated Other Comprehensive Loss	0		0		(132)
Total Equity	(16)		(16)		119,019
Liabilities and Equity	81,637		81,637		$ 613,500
Loss on Dissolution of Joint Venture	$ 0	$ 0	$ (112,429)	$ 0