Organization And Summary Of Significant Accounting Policies (Narrative) (Details)		3 Months Ended		12 Months Ended
	Jan. 03, 2017 USD ($)	Jun. 30, 2015 $ / shares shares	Jun. 21, 2015 $ / shares shares	Dec. 31, 2016 USD ($) segment property $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Oct. 31, 2016 USD ($)	Feb. 28, 2015 USD ($)	Dec. 31, 2013 shares
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Various subsidiary limited partnership interest (in hundredths)				99.00%
General partnership interest (in hundredths)				1.00%
Number of hotel properties (in hotels) | property				43
Exercise of Option to Acquire Noncontrolling Interest | $				$ 2,318,000
Number of hotels in each reporting sements | segment				1
Related party dues, settlement, period				1 year
Weighted average ownership percentage in the Partnership (in hundredths)				93.60%	95.00%	95.80%
Noncontrolling interests in Nonredeemable Common Units | $				$ 44,321,000	$ 31,876,000
Preferred Shares - Outstanding (in shares)				14,700,000	7,600,000
Preferred Shares - Par Value (in dollars per share) | $ / shares				$ 0.01	$ 0.01
Preferred shares, liquidation preference (in dollars per share) | $ / shares				$ 25	$ 25
Proceeds from issuance of preferred stock, net | $				$ 282,686,000
Restricted Shares Forfeiture (in shares)						1,948,324
Aggregate amount authorized to be repurchased | $							$ 100,000,000	$ 100,000,000
Repurchase of Common Shares (in shares)				2,772,710
Repurchase of Common Shares | $				$ 52,055,000	$ 128,239,000	$ 15,419,000
Reverse share split				0.25
Common Stock, Dividends declared (in dollars per share) | $ / shares				$ 1.32	$ 1.12	$ 1.04
Distribution of REIT taxable income to shareholders' (in hundredths)				90.00%
Recognize a tax benefit from an uncertain tax position (in hundredths)				50.00%
Noncontrolling Interests Common Units And LTIP Units [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Nonredeemable common units outstanding (in shares)				2,838,546
Shares, Outstanding				2,838,546	2,319,301	2,199,434
Fair market value of nonredeemable common units | $				$ 61,029,000
Common Shares - Outstanding (in shares)		2,328,276	9,313,063
Common Stock, Dividends declared (in dollars per share) | $ / shares		$ 0.28	$ 0.07
Preferred Shares [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Shares, Outstanding				14,700,000	7,600,000	7,600,000			7,600,000
Common shares sold (in shares)				11,700,000
Series B Preferred Stock [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Preferred stock, dividend rate, percentage (in hundredths)				8.00%
Preferred Shares - Outstanding (in shares)					4,600,000
Preferred Stock, Redemption Price (in dollars per share) | $ / shares				$ 25.00
Aggregate per share redemption price | $ / shares				$ 25.3722
Series C Preferred Shares [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Preferred stock, dividend rate, percentage (in hundredths)				6.875%
Preferred Shares - Outstanding (in shares)				3,000,000	3,000,000
Series D Preferred Shares [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Preferred stock, dividend rate, percentage (in hundredths)				6.50%
Preferred Shares - Outstanding (in shares)				7,700,000
Proceeds from issuance of preferred stock, net | $				$ 185,999,000
Series D Preferred Shares Overallotment [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Preferred Shares - Outstanding (in shares)				700,000
Series E Preferred Shares [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Preferred stock, dividend rate, percentage (in hundredths)				6.50%
Preferred Shares - Outstanding (in shares)				4,000,000
Proceeds from issuance of preferred stock, net | $				$ 96,585,000
Joint Venture [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Number of hotel properties (in hotels) | property				12
Mystic Partners, LLC [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Number of hotel properties (in hotels) | property				3
Maximum exposure to losses due to investment in Joint Venture | $				$ 4,699,000
Cindat Hersha Owner JV, LLC [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Maximum exposure to losses due to investment in Joint Venture | $				$ 3,717,000
Hartford Marriott And Hartford Hilton [Member] | Mystic Partners, LLC [Member] | Subsequent Event [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Proceeds from sale of equity method investments | $	$ 8,500,000
Percent recovery of equity method investment	100.00%