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v3.8.0.1

Debt - Mortgage Debt (Details) $ in Millions | Apr. 26, 2017 USD ($) | Dec. 31, 2017 hotel
--- | --- | ---
Debt Instrument [Line Items] |  |
Number of hotel properties secured by mortgage debt |  | 8
Number of hotels (in hotels) |  | 28
Mortgages | Lexington Hotel New York Tenant Leases |  |
Debt Instrument [Line Items] |  |
Extinguishment of debt | $ | $ 170.4 |

X
- Definition Number of hotel properties secured by mortgage debt. + References No definition available. + Details
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Namespace Prefix: | drh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Gross amount of debt extinguished. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=drh_LexingtonHotelNewYorkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |