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Favorable Lease Assets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Indefinite-lived Intangible Assets by Major Class [Line Items]
Favorable lease assets, net	$ 33,338us-gaap_IntangibleAssetsNetExcludingGoodwill	$ 34,274us-gaap_IntangibleAssetsNetExcludingGoodwill
Above Market Leases Ground [Member] | Boston Westin Waterfront [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	18,239us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_BusinessAcquisitionAxis = drh_BostonWestinWaterfrontMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = drh_AboveMarketLeasesGroundMember	18,293us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_BusinessAcquisitionAxis = drh_BostonWestinWaterfrontMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = drh_AboveMarketLeasesGroundMember
Above Market Leases Ground [Member] | Hilton Minneapolis [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	5,741us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_BusinessAcquisitionAxis = drh_HiltonMinneapolisMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = drh_AboveMarketLeasesGroundMember	5,760us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_BusinessAcquisitionAxis = drh_HiltonMinneapolisMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = drh_AboveMarketLeasesGroundMember
Above Market Leases Ground [Member] | Lexington Hotel New York [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	209us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_BusinessAcquisitionAxis = drh_LexingtonHotelNewYorkMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = drh_AboveMarketLeasesGroundMember	1,031us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_BusinessAcquisitionAxis = drh_LexingtonHotelNewYorkMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = drh_AboveMarketLeasesGroundMember
Above Market Leases Ground [Member] | Hilton Boston Downtown Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	104us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_BusinessAcquisitionAxis = drh_HiltonBostonDowntownMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = drh_AboveMarketLeasesGroundMember	145us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_BusinessAcquisitionAxis = drh_HiltonBostonDowntownMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = drh_AboveMarketLeasesGroundMember
Above Market Lease Rights [Member] | Boston Westin Waterfront [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Nonamortizable intangible asset	$ 9,045us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_BusinessAcquisitionAxis = drh_BostonWestinWaterfrontMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = drh_AboveMarketLeaseRightsMember	$ 9,045us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_BusinessAcquisitionAxis = drh_BostonWestinWaterfrontMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = drh_AboveMarketLeaseRightsMember

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274



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