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Favorable Lease Assets - Narrative (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Business Acquisition [Line Items]      
Finite-lived intangible assets, amortization expense $ 200,000us-gaap_AmortizationOfIntangibleAssets    
Impairment of favorable lease asset 800,000us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill    
Off-Market Favorable Lease [Member]      
Business Acquisition [Line Items]      
Accumulated amortization 2,700,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_OffMarketFavorableLeaseMember
  3,000,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_OffMarketFavorableLeaseMember
Boston Westin Waterfront [Member] | Above Market Lease Rights [Member]      
Business Acquisition [Line Items]      
Impairment of favorable lease asset 0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill
/ us-gaap_BusinessAcquisitionAxis
= drh_BostonWestinWaterfrontMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= drh_AboveMarketLeaseRightsMember
0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill
/ us-gaap_BusinessAcquisitionAxis
= drh_BostonWestinWaterfrontMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= drh_AboveMarketLeaseRightsMember
 
Lexington Hotel New York [Member] | Above Market Leases Ground [Member]      
Business Acquisition [Line Items]      
Impairment of favorable lease asset $ 800,000us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill
/ us-gaap_BusinessAcquisitionAxis
= drh_LexingtonHotelNewYorkMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= drh_AboveMarketLeasesGroundMember
   
Minimum [Member] | Boston Westin Waterfront [Member] | Above Market Lease Rights [Member]      
Business Acquisition [Line Items]      
Number of room hotel for development for which favorable lease assets are owned (in rooms) 320drh_NumberOfRoomHotelForDevelopmentForWhichFavorableLeaseAssetsAreOwned
/ us-gaap_BusinessAcquisitionAxis
= drh_BostonWestinWaterfrontMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= drh_AboveMarketLeaseRightsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Maximum [Member] | Boston Westin Waterfront [Member] | Above Market Lease Rights [Member]      
Business Acquisition [Line Items]      
Number of room hotel for development for which favorable lease assets are owned (in rooms) 350drh_NumberOfRoomHotelForDevelopmentForWhichFavorableLeaseAssetsAreOwned
/ us-gaap_BusinessAcquisitionAxis
= drh_BostonWestinWaterfrontMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= drh_AboveMarketLeaseRightsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember