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Relationship with Managers - Schedule of Management Fees (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Relationships with Managers [Abstract]
Base management fees expense	$ 21,473drh_BaseManagementFeesExpense	$ 19,324drh_BaseManagementFeesExpense	$ 18,757drh_BaseManagementFeesExpense
Incentive management fees expense	8,554drh_IncentiveManagementFeesExpense	6,222drh_IncentiveManagementFeesExpense	5,550drh_IncentiveManagementFeesExpense
Management fees	$ 30,027us-gaap_OwnedPropertyManagementCosts	$ 25,546us-gaap_OwnedPropertyManagementCosts	$ 24,307us-gaap_OwnedPropertyManagementCosts

X

- Definition

Base Management Fees expense

+ References

No definition available.

+ Details

Name:	drh_BaseManagementFeesExpense
Namespace Prefix:	drh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Incentive management fees expense

+ References

No definition available.

+ Details

Name:	drh_IncentiveManagementFeesExpense
Namespace Prefix:	drh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	drh_RelationshipsWithManagersAbstract
Namespace Prefix:	drh_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The aggregate costs related to management of owned properties during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	duration