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v2.4.1.9

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 |  |  |  |  |  |  |  | 400,000,000 us-gaap_CommonStockSharesAuthorized | 400,000,000 us-gaap_CommonStockSharesAuthorized |  |  |  |
Common stock, par value (in dollars per share) |  |  |  |  |  |  |  | $ 0.01 us-gaap_CommonStockParOrStatedValuePerShare | $ 0.01 us-gaap_CommonStockParOrStatedValuePerShare |  |  |  |
Common stock votes |  |  |  |  |  |  |  | 1 drh_CommonStockVotingRightsVotes |  |  |  |  |
Proceeds from sale of common stock |  |  |  |  |  |  |  | $ 63,062,000 us-gaap_ProceedsFromIssuanceOfCommonStock | $ 0 us-gaap_ProceedsFromIssuanceOfCommonStock | $ 199,790,000 us-gaap_ProceedsFromIssuanceOfCommonStock |  |  |
Preferred stock, shares authorized |  |  |  |  |  |  |  | 10,000,000 us-gaap_PreferredStockSharesAuthorized | 10,000,000 us-gaap_PreferredStockSharesAuthorized |  |  |  |
Preferred stock, par value (in dollars per share) |  |  |  |  |  |  |  | $ 0.01 us-gaap_PreferredStockParOrStatedValuePerShare | $ 0.01 us-gaap_PreferredStockParOrStatedValuePerShare |  |  |  |
Preferred Stock, shares outstanding |  |  |  |  |  |  |  | 0 us-gaap_PreferredStockSharesOutstanding | 0 us-gaap_PreferredStockSharesOutstanding |  |  |  |
Operating partnership units option to redeem for common stock |  |  |  |  |  |  |  | 1 drh_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) | $ 0.1025 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.1025 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.1025 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.085 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.085 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.085 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.085 us-gaap_CommonStockDividendsPerShareCashPaid |  |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of common stock |  |  |  |  |  |  |  |  |  |  |  | 7,900,000 us-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) |  |  |  |  |  |  |  |  |  |  | $ 0.1025 us-gaap_CommonStockDividendsPerShareCashPaid / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |
Unaffiliated Third Parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Units of Partnership Interest, Amount |  |  |  |  |  |  |  | 0 us-gaap_UnitsOfPartnershipInterestAmount / dei_LegalEntityAxis = drh_UnaffiliatedThirdPartiesMember | 0 us-gaap_UnitsOfPartnershipInterestAmount / dei_LegalEntityAxis = drh_UnaffiliatedThirdPartiesMember |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price |  |  |  |  |  |  |  |  |  |  |  |  | 200,000,000 drh_SaleofCommonStockAggregateOfferingPrice / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Common stock sold in offering |  |  |  |  |  |  |  | 4,217,560 us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  | 20,000,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Share price of common stock sold |  |  |  |  |  |  |  | $ 15.12 us-gaap_SharePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Amount authorized to be repurchased |  |  |  |  |  |  |  |  | $ 100,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Common Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock sold in offering |  |  |  |  |  |  |  |  |  |  |  | 524,606 us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |
Share price of common stock sold |  |  |  |  |  |  |  |  |  |  |  | $ 15.18 us-gaap_SharePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |

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