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Property and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Property and Equipment    
Property and equipment, at cost $ 3,466,134us-gaap_PropertyPlantAndEquipmentGross $ 3,388,763us-gaap_PropertyPlantAndEquipmentGross
Less: accumulated depreciation (650,119)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (624,370)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property and equipment, net 2,816,015us-gaap_PropertyPlantAndEquipmentNet 2,764,393us-gaap_PropertyPlantAndEquipmentNet
Land [Member]    
Property and Equipment    
Property and equipment, at cost 528,746us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandMember		 508,838us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandMember
Land improvements [Member]    
Property and Equipment    
Property and equipment, at cost 7,994us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandImprovementsMember		 7,994us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandImprovementsMember
Buildings [Member]    
Property and Equipment    
Property and equipment, at cost 2,475,699us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingMember		 2,427,274us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingMember
Furniture, Fixtures and Equipment [Member]    
Property and Equipment    
Property and equipment, at cost 441,016us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= drh_FurnitureFixturesAndEquipmentMember		 430,873us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= drh_FurnitureFixturesAndEquipmentMember
CIP [Member]    
Property and Equipment    
Property and equipment, at cost $ 12,679us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= drh_ConstructionInProcessAndCorporateOfficeEquipmentMember		 $ 13,784us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= drh_ConstructionInProcessAndCorporateOfficeEquipmentMember