Debt Instrument, Interest Only Period

No definition available.

Name:	drh_DebtInstrumentInterestOnlyPeriod
Namespace Prefix:	drh_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

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

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_MortgagesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=drh_RenaissanceWorthingtonMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=drh_FrenchmansReefandMorningStarMarriottBeachMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=drh_JwMarriotDenverAtCherryCreekMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=drh_OrlandoAirportMarriottMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=drh_BostonWestinWaterfrontMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Mortgage Debt (Details)	Oct. 27, 2015 USD ($)	Jul. 02, 2015 USD ($)	Apr. 14, 2015 USD ($)	Oct. 09, 2015 USD ($)	Sep. 30, 2015 Hotel	Jul. 01, 2015 USD ($)	May. 11, 2015 USD ($)	Apr. 10, 2015 USD ($)
Debt Instrument [Line Items]
Number of hotel properties secured by mortgage debt (in hotels) \| Hotel					12
Number of hotels (in hotels) \| Hotel					29
Mortgages [Member] \| Renaissance Worthington [Member]
Debt Instrument [Line Items]
Mortgage loan amount			$ 85,000,000					$ 52,600,000.0
Fixed rate percentage			3.66%		3.6625%
Interest only period (in years)			2 years
Amortization period (in years)			30 years
Mortgages [Member] \| Frenchman's Reef and Morning Star Marriott Beach [Member]
Debt Instrument [Line Items]
Mortgage loan amount							$ 56,200,000.0
Fixed rate percentage							5.44%
Mortgages [Member] \| JW Marriott Denver at Cherry Creek [Member]
Debt Instrument [Line Items]
Mortgage loan amount		$ 65,000,000.0				$ 38,100,000.0
Fixed rate percentage		4.33%			4.33%
Amortization period (in years)		30 years
Mortgages [Member] \| Orlando Airport Marriott [Member]
Debt Instrument [Line Items]
Fixed rate percentage					5.68%
Subsequent Event [Member] \| Mortgages [Member] \| Orlando Airport Marriott [Member]
Debt Instrument [Line Items]
Mortgage loan amount				$ 55,300,000.0
Fixed rate percentage				5.68%
Subsequent Event [Member] \| Mortgages [Member] \| Westin Boston Waterfront Hotel [Member]
Debt Instrument [Line Items]
Mortgage loan amount	$ 205,000,000.0
Fixed rate percentage	4.36%
Amortization period (in years)	30 years