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

Number of Room Hotel For Development For Which Favorable Lease Assets Are Owned

+ References

No definition available.

+ Details

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

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_AmortizationOfIntangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

+ References

+ Details

Name:	us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph ((a)(1),(b))

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_IntangibleAssetsNetExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Favorable Lease Assets (Details) (USD $)	3 Months Ended		9 Months Ended
Favorable Lease Assets (Details) (USD $)	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Indefinite-lived Intangible Assets by Major Class [Line Items]
Favorable lease assets, net	$ 34,425,000		$ 34,425,000		$ 39,936,000
Favorable Lease Assets (Textuals) [Abstract]
Finite-lived intangible assets, amortization expense	200,000		600,000
Above Market Leases Ground [Member] \| Boston Westin Waterfront [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	18,347,000		18,347,000		18,510,000
Above Market Leases Ground [Member] \| Hilton Minneapolis [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	5,779,000		5,779,000		5,835,000
Above Market Leases Ground [Member] \| Oak Brook Hills Resort [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	0		0		5,058,000
Above Market Leases Ground [Member] \| Lexington Hotel New York [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	1,067,000		1,067,000		1,176,000
Above Market Leases Ground [Member] \| Hilton Boston Downtown Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	187,000		187,000		312,000
Above Market Lease Rights [Member] \| Boston Westin Waterfront [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Nonamortizable intangible asset	9,045,000		9,045,000		9,045,000
Favorable Lease Assets (Textuals) [Abstract]
Impairment of favorable lease asset	0	0	0	0
Above Market Lease Rights [Member] \| Boston Westin Waterfront [Member] \| Minimum [Member]
Favorable Lease Assets (Textuals) [Abstract]
Number of room hotel for development for which favorable lease assets are owned (in rooms)	320		320
Above Market Lease Rights [Member] \| Boston Westin Waterfront [Member] \| Maximum [Member]
Favorable Lease Assets (Textuals) [Abstract]
Number of room hotel for development for which favorable lease assets are owned (in rooms)	350		350
Off-Market Favorable Lease [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	$ 2,800,000		$ 2,800,000		$ 6,800,000