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Debt (Senior Unsecured Credit Facility) (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 Hotel | Apr. 01, 2015
Line of Credit Facility [Line Items] |  |
Maximum borrowing capacity | $ 200,000,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity |
Increase in Credit Facility | 400,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity |
Percent of Net Proceeds from Future Equity Issuances (as a percent) | 75.00%drh_LineOfCreditFacilityCovenantPercentOfNetProceedsFromFutureEquityIssuances |
Minimum number of unencumbered borrowing base (in properties) | 5drh_LineOfCreditFacilityCovenantMinimumNumberOfUnencumberedBorrowingBaseProperties |
Line of Credit Facility Minimum Unencumbered Borrowing Base Value | 250,000,000drh_LineOfCreditFacilityCovenantMinimumUnencumberedBorrowingBaseValue |
Number of unencumbered borrowing base properties | 5drh_LineofCreditFacilityNumberofUnencumberedBorrowingBaseProperties |
Unencumbered borrowing base value | 335,000,000drh_LineofCreditFacilityUnencumberedBorrowingBaseValue |
Ratio of indebtedness | 3.7drh_LineOfCreditFacilityLeverageRatio |
Interest and unused credit facility fees | 200,000drh_LineOfCreditFacilityInterestAndCommitmentFeeAmount |
LIBOR [Member] | Senior unsecured credit facility [Member] |  |
Line of Credit Facility [Line Items] |  |
Basis spread on variable rate | 1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
Subsequent Event [Member] |  |
Line of Credit Facility [Line Items] |  |
Amount borrowed to repay mortgage debt |  | $ 45,000,000drh_AmountBorrowedUnderFacilitytoRepayMortgageDebt / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember

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- Definition Amount Borrowed Under Facility to Repay Mortgage Debt + References No definition available. + Details
Name: | drh_AmountBorrowedUnderFacilitytoRepayMortgageDebt
Namespace Prefix: | drh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line Of Credit Facility Covenant Minimum Number Of Unencumbered Borrowing Base Properties + References No definition available. + Details
Name: | drh_LineOfCreditFacilityCovenantMinimumNumberOfUnencumberedBorrowingBaseProperties
Namespace Prefix: | drh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Line of Credit Facility Minimum Unencumbered Borrowing Base Value + References No definition available. + Details
Name: | drh_LineOfCreditFacilityCovenantMinimumUnencumberedBorrowingBaseValue
Namespace Prefix: | drh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Line Of Credit Facility Covenant Percent of Net Proceeds From Future Equity Issuances + References No definition available. + Details
Name: | drh_LineOfCreditFacilityCovenantPercentOfNetProceedsFromFutureEquityIssuances
Namespace Prefix: | drh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line of credit facility interest and commitment fee amount. + References No definition available. + Details
Name: | drh_LineOfCreditFacilityInterestAndCommitmentFeeAmount
Namespace Prefix: | drh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line Of Credit Facility Leverage Ratio + References No definition available. + Details
Name: | drh_LineOfCreditFacilityLeverageRatio
Namespace Prefix: | drh_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

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- Definition Line of Credit Facility, Number of Unencumbered Borrowing Base Properties + References No definition available. + Details
Name: | drh_LineofCreditFacilityNumberofUnencumberedBorrowingBaseProperties
Namespace Prefix: | drh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Line of Credit Facility, Unencumbered Borrowing Base Value + References No definition available. + Details
Name: | drh_LineofCreditFacilityUnencumberedBorrowingBaseValue
Namespace Prefix: | drh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |