Investment In Unconsolidated Joint Ventures (Investment In Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2017	Dec. 31, 2016
Investments in Unconsolidated Joint Ventures [Line Items]
Investment in unconsolidated joint ventures	$ 3,705	$ 11,441
SB Partners, LLC [Member] \| Holiday Inn Express, South Boston, MA [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Percent Owned	50.00%
Investment in unconsolidated joint ventures	$ 1,364	913
Hiren Boston, LLC [Member] \| Courtyard by Marriott, South Boston, MA [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Percent Owned	50.00%
Investment in unconsolidated joint ventures	$ 2,341	2,112
Mystic Partners, LLC [Member] \| Hilton And Marriott Branded Hotels In CT [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Preferred Return	8.50%
Investment in unconsolidated joint ventures		4,699
Mystic Partners, LLC [Member] \| Hilton And Marriott Branded Hotels In CT [Member] \| Minimum [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Percent Owned	8.80%
Mystic Partners, LLC [Member] \| Hilton And Marriott Branded Hotels In CT [Member] \| Maximum [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Percent Owned	66.70%
Cindat Hersha Owner JV, LLC [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Percent Owned	30.00%
Cindat Hersha Owner JV, LLC [Member] \| Hilton And IHG Branded Hotels In NYC [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Percent Owned	30.00%
Investment in unconsolidated joint ventures		$ 3,717

Represent's the Company's preferred return based on the joint venture agreement.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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