Mortgage loan assumed from an equity method investment that is now consolidated.

No definition available.

Name:	ht_BusinessAcquisitionMortgageDebtAssumedPrincipalBalance
Namespace Prefix:	ht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Common Equity Interest, Return

+ References

No definition available.

+ Details

Name:	ht_CommonEquityInterestReturn
Namespace Prefix:	ht_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Common Equity Interest, Return, Annual Reduction

+ References

No definition available.

+ Details

Name:	ht_CommonEquityInterestReturnAnnualReduction
Namespace Prefix:	ht_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Common Equity Interest, Return, Annual Reduction, Term

+ References

No definition available.

+ Details

Name:	ht_CommonEquityInterestReturnAnnualReductionTerm
Namespace Prefix:	ht_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Preferred Joint Venture Partner, Ownership Percentage

+ References

No definition available.

+ Details

Name:	ht_PreferredJointVenturePartnerOwnershipPercentage
Namespace Prefix:	ht_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Proceeds From Redemption Of Joint Venture Interest And Transfer Of Minority Ownership Interests

+ References

No definition available.

+ Details

Name:	ht_ProceedsFromRedemptionOfJointVentureInterestAndTransferOfMinorityOwnershipInterests
Namespace Prefix:	ht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

In a business combination achieved in stages, this element represents the amount of net gain (loss) recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)(2)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-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

+ Details

Name:	us-gaap_EquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromDivestitureOfInterestInJointVenture
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 21D
-URI http://asc.fasb.org/extlink&oid=109223946&loc=SL94080555-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

As of the reporting date, the carrying amount of noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. The noncontrolling interest holder's ownership (or holders' ownership) may be in the form of common shares (regardless of class), limited partnership units (regardless of class), non-preferential membership interests, or any other form of common equity regardless of investee entity legal form.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph (16)(c)
-URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph 14
-URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph 15
-URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph (12)(c)
-URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764

+ Details

Name:	us-gaap_RedeemableNoncontrollingInterestEquityCommonCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=ht_MysticMarriottHotelSpaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ht_CindatHershaOwnerJvLlcPreferredEquityInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ht_CindatHershaOwnerJvLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=ht_HiltonAndIhgBrandedHotelsInNycMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=ht_CindatCapitalManagementLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_EquityInterestIssuedOrIssuableByTypeAxis=ht_JuniorCommonEquityInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=ht_HershaHospitalityLimitedPartnershipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ht_Home2SuitesSouthBostonMAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Investment In Unconsolidated Joint Ventures (Narrative) (Details) - USD ($) $ in Thousands			3 Months Ended		12 Months Ended
	Feb. 06, 2018	Jan. 03, 2017	Jun. 30, 2020	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 27, 2018
Investments in Unconsolidated Joint Ventures [Line Items]
Investment in Unconsolidated Joint Ventures					$ 8,446	$ 4,004
Distributions from Unconsolidated Joint Ventures				$ 0	1,622	47,962
Gain from remeasurement of investment				16,240	0	0	$ 16,240
Proceeds from the Sale of Joint Venture Interests				$ 11,624	$ 0	0
Subsequent Event [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Proceeds from the Sale of Joint Venture Interests			$ 26,000
Mystic Marriott Hotel & Spa [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Percent owned after transaction		100.00%
Proceeds of redemption and transfer of minority interest		$ 11,623
Business acquisition, mortgage debt assumed, principal balance		41,333
Gain from remeasurement of investment		$ 16,240
Cindat Hersha Owner Jv Llc Preferred Equity Interest [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Distributions from Unconsolidated Joint Ventures	$ 47,738
Cindat Hersha Owner JV, LLC [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Percent owned (in hundredths)					31.20%
Cindat Hersha Owner JV, LLC [Member] \| Hilton and IHG branded hotels in NYC [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Percent owned (in hundredths)					31.20%
Investment in Unconsolidated Joint Ventures					$ 0	$ 0
Cindat Capital Management Limited [Member] \| Cindat Hersha Owner JV, LLC [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Preferred joint venture partner, ownership percentage					68.80%
Common equity interest					$ 142,000
Common equity interest return					8.00%
Annual reduction rate					0.50%
Annual reduction term					4 years
Cindat Capital Management Limited [Member] \| Cindat Hersha Owner JV, LLC [Member] \| Junior Common Equity Interest [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Common equity interest return					9.00%
Hersha Hospitality Limited Partnership [Member] \| Cindat Hersha Owner JV, LLC [Member] \| Junior Common Equity Interest [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Common equity interest					$ 64,357
Home2 Suites, South Boston, MA [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Investment in Unconsolidated Joint Ventures								$ 1,000