Property and Equipment - Narrative (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Accrued capital expenditures	$ 4.6drh_AccruedCapitalExpenditures	$ 6.2drh_AccruedCapitalExpenditures

Amount accrued for capital expenditures as of the balance sheet date.

No definition available.

Name:	drh_AccruedCapitalExpenditures
Namespace Prefix:	drh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant