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Capital Stock (Details) (USD $)
 0 Months Ended 12 Months Ended 0 Months Ended 2 Months Ended 1 Months Ended
Oct. 10, 2014
Jul. 10, 2014
Apr. 10, 2014
Jan. 10, 2014
Oct. 10, 2013
Jul. 11, 2013
Apr. 12, 2013
Dec. 31, 2014
vote
Dec. 31, 2013
Dec. 31, 2012
Jan. 12, 2015
Feb. 26, 2015
Nov. 30, 2014
Dividends Payable [Line Items]                          
Common stock, shares authorized               400,000,000us-gaap_CommonStockSharesAuthorized 400,000,000us-gaap_CommonStockSharesAuthorized        
Common stock, par value (in dollars per share)               $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare        
Common stock votes               1drh_CommonStockVotingRightsVotes          
Proceeds from sale of common stock               $ 63,062,000us-gaap_ProceedsFromIssuanceOfCommonStock $ 0us-gaap_ProceedsFromIssuanceOfCommonStock $ 199,790,000us-gaap_ProceedsFromIssuanceOfCommonStock      
Preferred stock, shares authorized               10,000,000us-gaap_PreferredStockSharesAuthorized 10,000,000us-gaap_PreferredStockSharesAuthorized        
Preferred stock, par value (in dollars per share)               $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare        
Preferred Stock, shares outstanding               0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding        
Operating partnership units option to redeem for common stock               1drh_OperatingPartnershipUnitsOptionToRedeemForCommonStockRatio          
Payment Date Oct. 10, 2014 Jul. 10, 2014 Apr. 10, 2014 Jan. 10, 2014 Oct. 10, 2013 Jul. 11, 2013 Apr. 12, 2013            
Record Date Sep. 30, 2014 Jun. 30, 2014 Mar. 31, 2014 Dec. 31, 2013 Sep. 30, 2013 Jun. 28, 2013 Mar. 28, 2013            
Dividends per common share (in dollars per share) $ 0.1025us-gaap_CommonStockDividendsPerShareCashPaid $ 0.1025us-gaap_CommonStockDividendsPerShareCashPaid $ 0.1025us-gaap_CommonStockDividendsPerShareCashPaid $ 0.085us-gaap_CommonStockDividendsPerShareCashPaid $ 0.085us-gaap_CommonStockDividendsPerShareCashPaid $ 0.085us-gaap_CommonStockDividendsPerShareCashPaid $ 0.085us-gaap_CommonStockDividendsPerShareCashPaid            
Subsequent Event [Member]                          
Dividends Payable [Line Items]                          
Proceeds from sale of common stock                       7,900,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		  
Payment Date                     Jan. 12, 2015    
Record Date                     Dec. 31, 2014    
Dividends per common share (in dollars per share)                     $ 0.1025us-gaap_CommonStockDividendsPerShareCashPaid
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		    
Unaffiliated Third Parties [Member]                          
Dividends Payable [Line Items]                          
Units of Partnership Interest, Amount               0us-gaap_UnitsOfPartnershipInterestAmount
/ dei_LegalEntityAxis
= drh_UnaffiliatedThirdPartiesMember		 0us-gaap_UnitsOfPartnershipInterestAmount
/ dei_LegalEntityAxis
= drh_UnaffiliatedThirdPartiesMember		        
Common Stock [Member]                          
Dividends Payable [Line Items]                          
Aggregate offering price                         200,000,000drh_SaleofCommonStockAggregateOfferingPrice
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
Common stock sold in offering               4,217,560us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		   20,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		      
Share price of common stock sold               $ 15.12us-gaap_SharePrice
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		          
Amount authorized to be repurchased                 $ 100,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		        
Common Stock [Member] | Subsequent Event [Member]                          
Dividends Payable [Line Items]                          
Common stock sold in offering                       524,606us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		  
Share price of common stock sold                       $ 15.18us-gaap_SharePrice
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember