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Income Taxes - Narrative (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2014
Income Tax Contingency [Line Items]    
Franchise tax expense classified as corporate expenses $ 0.4drh_FranchiseTaxExpense  
Deferred tax assets expected to be recovered against reversing taxable temporary differences   9.3drh_DeferredTaxAssetAnticipatedRecovery
Deferred tax assets dependent upon future taxable earnings of TRS   31.2drh_DeferredTaxAssetsDependentOnSubsidiaryFutureTaxableEarnings
Frenchman's Reef and Morning Star Marriott Beach [Member]    
Income Tax Contingency [Line Items]    
New adjusted tax rate after the reduction (as a percent)   7.00%drh_NewAdjustedTaxRateAfterReduction
/ us-gaap_RealEstatePropertiesAxis
= drh_FrenchmansReefandMorningStarMarriottBeachMember
Frenchman's Reef and Morning Star Marriott Beach [Member] | US Virgin Islands [Member]    
Income Tax Contingency [Line Items]    
Percentage of income tax rate if the agreement is not extended (as a percent)   37.40%drh_EffectiveIncomeTaxRateIfAgreementNotExtended
/ us-gaap_RealEstatePropertiesAxis
= drh_FrenchmansReefandMorningStarMarriottBeachMember
/ us-gaap_StatementGeographicalAxis
= country_VI