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Dispositions (Details) (USD $) | 3 Months Ended | 12 Months Ended | 0 Months Ended | 1 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 31, 2013 Hotel | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 Hotel | Dec. 31, 2012 Transaction | Dec. 18, 2014 rooms | Apr. 14, 2014 rooms | Nov. 30, 2013 rooms | Mar. 23, 2012 Hotel
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net proceeds from sale of properties |  |  |  |  | $ 182,117,000 us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment | $ 76,437,000 us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment | $ 131,073,000 us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment |  |  |  |
Gain on sale of hotel property |  |  |  |  | 50,969,000 us-gaap_GainsLossesOnSalesOfInvestmentRealEstate | 0 us-gaap_GainsLossesOnSalesOfInvestmentRealEstate | 0 us-gaap_GainsLossesOnSalesOfInvestmentRealEstate |  |  |  |
Number of hotel portfolio properties sold (in hotels) | 4 drh_NumberOfHotelPortfolioPropertiesSold |  |  |  |  | 4 drh_NumberOfHotelPortfolioPropertiesSold |  |  |  |  | 3 drh_NumberOfHotelPortfolioPropertiesSold
Number of transactions related to hotel sold |  |  |  |  |  |  | 2 drh_NumberOfTransactionsRelatedToHotelSold |  |  |  |
Hotel revenues |  |  |  |  |  | 21,336,000 us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue | 55,654,000 us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue |  |  |  |
Hotel operating expenses |  |  |  |  |  | (15,977,000)us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense | (41,424,000)us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense |  |  |  |
Operating income |  |  |  |  |  | 5,359,000 us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss | 14,230,000 us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss |  |  |  |
Depreciation and amortization |  |  |  |  |  | (1,759,000)us-gaap_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization | (4,495,000)us-gaap_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization |  |  |  |
Interest income |  |  |  |  |  | 1,000 us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestIncome | 3,000 us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestIncome |  |  |  |
Interest expense |  |  |  |  |  | 0 us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense | (2,297,000)us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense |  |  |  |
Impairment charge |  |  |  |  |  | 0 drh_DisposalGroupIncludingDiscontinuedOperationImpairmentCharge | (14,690,000)drh_DisposalGroupIncludingDiscontinuedOperationImpairmentCharge |  |  |  |
Gain on sale of hotel properties, net |  |  |  |  | 50,969,000 us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax | 22,733,000 us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax | 9,479,000 us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax |  |  |  |
Income tax (expense) benefit |  |  |  |  | 0 us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation | (1,097,000)us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation | (747,000)us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation |  |  |  |
Income (loss) from discontinued operations | 22,727,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 885,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 952,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 673,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 25,237,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 1,483,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  |  |  |
Basic and diluted (loss) income from discontinued operations per share | $ 0.12 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare | $ 0.01 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare | $ 0.13 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare | $ 0.01 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare |  |  |  |
Marriott Los Angeles Airport [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of hotel rooms sold |  |  |  |  |  |  |  | 1,004 drh_NumberofHotelRoomsSold / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_MarriottLosAngelesAirportMember |  |  |
Net proceeds from sale of properties |  |  |  |  |  |  |  | 158,600,000 us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_MarriottLosAngelesAirportMember |  |  |
Net proceeds from sale of properties |  |  |  |  |  |  |  | 147,500,000 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_MarriottLosAngelesAirportMember |  |  |
Pre-tax income (loss) |  |  |  |  | 54,900,000 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_MarriottLosAngelesAirportMember | 1,800,000 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_MarriottLosAngelesAirportMember | 200,000 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_MarriottLosAngelesAirportMember |  |  |  |
Gain on sale of hotel properties, net |  |  |  |  |  |  |  | 49,700,000 us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_MarriottLosAngelesAirportMember |  |  |
Oak Brook Hills Resort [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of hotel rooms sold |  |  |  |  |  |  |  |  | 386 drh_NumberofHotelRoomsSold / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_OakBrookHillsResortMember |  |
Net proceeds from sale of properties |  |  |  |  |  |  |  |  | 30,100,000 us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_OakBrookHillsResortMember |  |
Amount of seller financing |  |  |  |  |  |  |  |  | 4,000,000 drh_ProceedsFromSaleOfRealEstateHeldforinvestmentSellerFinancingPortion / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_OakBrookHillsResortMember |  |
Gain on sale of hotel property |  |  |  |  | 1,300,000 us-gaap_GainsLossesOnSalesOfInvestmentRealEstate / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_OakBrookHillsResortMember |  |  |  |  |  |
Loan amortization term |  |  |  |  |  |  |  |  | 25 years |  |
Pre-tax income (loss) |  |  |  |  | (600,000)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_OakBrookHillsResortMember | 1,400,000 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_OakBrookHillsResortMember | (31,200,000)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_OakBrookHillsResortMember |  |  |  |
Oak Brook Hills Resort [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 6.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_OakBrookHillsResortMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |
Annual increase on variable rate spread |  |  |  |  | 1.00%drh_DebtInstrumentBasisSpreadonVariableRateAnnualIncrease / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_OakBrookHillsResortMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |
Torrance Marriott South Bay [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of hotel rooms sold |  |  |  |  |  |  |  |  |  | 487 drh_NumberofHotelRoomsSold / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_TorranceMarriottSouthBayMember |
Net proceeds from sale of properties |  |  |  |  |  |  |  |  |  | 74,000,000 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_TorranceMarriottSouthBayMember |
Gain on sale of hotel properties, net |  |  |  |  |  |  |  |  |  | 22,700,000 us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_TorranceMarriottSouthBayMember |
Prepaid Expenses and Other Current Assets [Member] | Oak Brook Hills Resort [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Valuation allowance |  |  |  |  | 4,000,000 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = drh_OakBrookHillsResortMember |  |  |  |  |  |
Other Income [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest Income, Other |  |  |  |  | $ 200,000 us-gaap_InterestIncomeOther / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherIncomeMember |  |  |  |  |  |

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