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Income Taxes - Reconciliation of the Statutory Federal Tax Provision to Income Tax (Benefit) Provision (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Statutory federal tax provision (35)%	$ 59,155us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ 7,950us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ (8,703)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Tax impact of REIT election	(52,937)drh_TaxImpactOfRealEstateInvestmentTrustElection	(8,641)drh_TaxImpactOfRealEstateInvestmentTrustElection	3,290drh_TaxImpactOfRealEstateInvestmentTrustElection
State income tax provision (benefit), net of federal tax benefit	893us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	58us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	(720)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Foreign income tax benefit	(1,603)us-gaap_IncomeTaxReconciliationTaxCreditsForeign	(552)us-gaap_IncomeTaxReconciliationTaxCreditsForeign	(694)us-gaap_IncomeTaxReconciliationTaxCreditsForeign
Foreign tax rate adjustment	0us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential	0us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential	0us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Other	128us-gaap_IncomeTaxReconciliationOtherReconcilingItems	72us-gaap_IncomeTaxReconciliationOtherReconcilingItems	34us-gaap_IncomeTaxReconciliationOtherReconcilingItems
Income tax provision (benefit) from continuing operations	$ 5,636us-gaap_IncomeTaxExpenseBenefit	$ (1,113)us-gaap_IncomeTaxExpenseBenefit	$ (6,793)us-gaap_IncomeTaxExpenseBenefit
Statutory federal tax provision (as a percent)	35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

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Tax impact of Real Estate Investment Trust election

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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-Name Accounting Standards Codification

-Topic 740

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

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