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Commitments and Contingencies - Additional Information (Details) (USD $)
12 Months Ended 1 Months Ended 9 Months Ended
Dec. 31, 2014
Hotel
Dec. 31, 2013
Dec. 31, 2012
May 31, 2014
Sep. 30, 2014
Real Estate Properties [Line Items]          
Gain related to settlement amount $ 10,999,000us-gaap_GainLossRelatedToLitigationSettlement $ 0us-gaap_GainLossRelatedToLitigationSettlement $ 0us-gaap_GainLossRelatedToLitigationSettlement    
Number of properties subject to ground leases (in hotels) 5us-gaap_NumberOfPropertiesSubjectToGroundLeases        
Ground rent expense 15,000,000us-gaap_LeaseAndRentalExpense 15,000,000us-gaap_LeaseAndRentalExpense 14,600,000us-gaap_LeaseAndRentalExpense    
Cash paid for ground rent 8,900,000us-gaap_PaymentsForRent 8,500,000us-gaap_PaymentsForRent 8,200,000us-gaap_PaymentsForRent    
Bethesda Marriott Suites [Member]          
Real Estate Properties [Line Items]          
Number of renewal periods (in ones) 0drh_NumberOfPropertiesSubjectToGroundLeasesNumberOfRenewalPeriods
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= drh_BethesdaMarriottSuitesMember
       
Courtyard Manhattan / Fifth Avenue [Member]          
Real Estate Properties [Line Items]          
Number of renewal periods (in ones) 1drh_NumberOfPropertiesSubjectToGroundLeasesNumberOfRenewalPeriods
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= drh_CourtyardManhattanFifthAvenueMember
       
Ground leases renewal option (in years) 49 years        
Marriott Salt Lake City Downtown [Member]          
Real Estate Properties [Line Items]          
Number of properties subject to ground leases (in hotels) 2us-gaap_NumberOfPropertiesSubjectToGroundLeases
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= drh_MarriottSaltLakeCityDowntownMember
       
Interest in land under hotel (as a percent of ownership) 21.00%drh_InterestInLandUnderHotel
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= drh_MarriottSaltLakeCityDowntownMember
       
Boston Westin Waterfront [Member]          
Real Estate Properties [Line Items]          
Number of renewal periods (in ones) 0drh_NumberOfPropertiesSubjectToGroundLeasesNumberOfRenewalPeriods
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= drh_BostonWestinWaterfrontMember
       
Hilton Minneapolis [Member]          
Real Estate Properties [Line Items]          
Number of renewal periods (in ones) 0drh_NumberOfPropertiesSubjectToGroundLeasesNumberOfRenewalPeriods
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= drh_HiltonMinneapolisMember
       
Renaissance Worthington [Member]          
Real Estate Properties [Line Items]          
Number of properties subject to ground leases (in hotels) 3us-gaap_NumberOfPropertiesSubjectToGroundLeases
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= drh_RenaissanceWorthingtonMember
       
Number of renewal periods (in ones) 3drh_NumberOfPropertiesSubjectToGroundLeasesNumberOfRenewalPeriods
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= drh_RenaissanceWorthingtonMember
       
Ground leases renewal option (in years) 15 years        
Percentage of land on which the parking garage is constructed 25.00%drh_PercentageOfLandOnWhichParkingGarageIsConstructed
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= drh_RenaissanceWorthingtonMember
       
Boston Westin Waterfront [Member]          
Real Estate Properties [Line Items]          
Settlement amount       14,000,000us-gaap_LitigationSettlementAmount
/ us-gaap_LitigationCaseAxis
= drh_BostonWestinWaterfrontMember
 
Gain related to settlement amount       11,000,000us-gaap_GainLossRelatedToLitigationSettlement
/ us-gaap_LitigationCaseAxis
= drh_BostonWestinWaterfrontMember
 
Contingency fee paid       1,200,000us-gaap_LitigationSettlementExpense
/ us-gaap_LitigationCaseAxis
= drh_BostonWestinWaterfrontMember
 
Corporate and Other Expenses [Member] | Boston Westin Waterfront [Member]          
Real Estate Properties [Line Items]          
Legal fees         $ 1,800,000us-gaap_LegalFees
/ us-gaap_IncomeStatementLocationAxis
= drh_CorporateandOtherExpensesMember
/ us-gaap_LitigationCaseAxis
= drh_BostonWestinWaterfrontMember