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Debt - Mortgage Debt (Details)	Mar. 31, 2017 Hotel
Debt Disclosure [Abstract]
Number of hotel properties secured by mortgage debt (in hotels)	9
Number of hotels (in hotels)	28

X

- Definition

Number of hotel properties secured by mortgage debt.

+ References

No definition available.

+ Details

Name:	drh_NumberOfHotelPropertiesSecuredByMortgageDebt
Namespace Prefix:	drh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_DebtDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant