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Fair Value of Assets and Liabilities (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2014
Fair Value of Assets and Liabilities      
Loss on asset impairment $ 8,008us-gaap_AssetImpairmentCharges $ 8,547us-gaap_AssetImpairmentCharges  
Travel Centers of America LLC      
Fair Value of Assets and Liabilities      
Shares included in investment securities     3,420,000us-gaap_InvestmentOwnedBalanceShares
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hpt_TravelCentersOfAmericaMember
Quoted Prices in Active Markets for Identical Assets (Level 1) | Travel Centers of America LLC      
Fair Value of Assets and Liabilities      
Shares included in investment securities     3,420,000us-gaap_InvestmentOwnedBalanceShares
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hpt_TravelCentersOfAmericaMember
Historical cost of securities     17,407us-gaap_InvestmentOwnedAtCost
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hpt_TravelCentersOfAmericaMember
Recurring | Fair Value      
Fair Value of Assets and Liabilities      
Investment securities     43,160us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Fair Value of Assets and Liabilities      
Investment securities     43,160us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember