Business Acquisition Base management fee percentage of Gross Revenue.

Name:	drh_BusinessAcquisitionBaseManagementFeePercentageOfGrossRevenue
Namespace Prefix:	drh
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Business Acquisition Base management fee percentage of Gross Revenue for Initial Periods.

+ Details

Name:	drh_BusinessAcquisitionBaseManagementFeePercentageOfGrossRevenueForInitialPeriods
Namespace Prefix:	drh
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Business Acquisition Cost of Acquisition Entity Purchase Price Per Room

+ Details

Name:	drh_BusinessAcquisitionCostOfAcquisitionEntityPurchasePricePerRoom
Namespace Prefix:	drh
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Business Acquisition Incentive Management Fee percentage of Operating Profit.

+ Details

Name:	drh_BusinessAcquisitionIncentiveManagementFeePercentageOfOperatingProfit
Namespace Prefix:	drh
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Business Acquisition Number of Rooms Acquired.

+ Details

Name:	drh_BusinessAcquisitionNumberOfRoomsAcquired
Namespace Prefix:	drh
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Earnest Deposit Upon Additional Criteria Met

+ Details

Name:	drh_EarnestMoneyDepositUponAdditionalCriteriaMet
Namespace Prefix:	drh
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Expected Time to Complete Hotel Transaction

+ Details

Name:	drh_ExpectedTimeToCompleteHotelTransaction
Namespace Prefix:	drh
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Franchise Fee Agreement Term

+ Details

Name:	drh_FranchiseFeeAgreementTerm
Namespace Prefix:	drh
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Franchise Fee as Percentage of Food and Beverage Revenue

+ Details

Name:	drh_FranchiseFeeAsPercentageOfFoodAndBeverageRevenue
Namespace Prefix:	drh
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Franchise Fee as Percentage of Gross Rooms Revenue

+ Details

Name:	drh_FranchiseFeeAsPercentageOfGrossRoomsRevenue
Namespace Prefix:	drh
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Length of Termination Window

+ Details

Name:	drh_LengthOfTerminationWindow
Namespace Prefix:	drh
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Management Agreement Renewal Term

+ Details

Name:	drh_ManagementAgreementRenewalTerm
Namespace Prefix:	drh
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Management Agreement Term

+ Details

Name:	drh_ManagementAgreementTerm
Namespace Prefix:	drh
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of Termination Periods Available

+ Details

Name:	drh_NumberOfTerminationPeriodsAvailable
Namespace Prefix:	drh
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cash paid to acquire the entity.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaid
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair Value of the liabilities incurred by the acquirer to former owners of the acquiree, including the fair value of any contingent consideration. If liabilities transferred as consideration remain within the combined entity after the business combination (for example, because the assets or liabilities were transferred to the acquiree rather than to its former owners), and the acquirer therefore retains control of them; in that situation, the acquirer measures those liabilities at their carrying amounts immediately before the acquisition date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 25

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 39, 40, 41

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityLiabilitiesIncurred
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

+ Details

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityPurchasePrice
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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.

+ Details

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 3: 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=6584090&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedPremium
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

A deposit made by a purchaser of real estate to evidence good faith. It is customary for a buyer to give the seller earnest money at the time a sales contract is signed. The earnest money generally is credited to the down payment at closing, which is applied at closing as a component of payment against the purchase price.

+ Details

Name:	us-gaap_EarnestMoneyDeposits
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 32

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

Name:	us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 18

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 19

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

Name:	us-gaap_ProceedsFromLongTermLinesOfCredit
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Acquisitions (Details) (USD $)	9 Months Ended						3 Months Ended	9 Months Ended			3 Months Ended		9 Months Ended		9 Months Ended		9 Months Ended
Acquisitions (Details) (USD $)	Sep. 09, 2011	Sep. 10, 2010	Sep. 09, 2011 Radisson Lexington [Member] Senior unsecured credit facility [Member]	Sep. 09, 2011 Minimum [Member] Jw Marriot Denver at Cherry Creek [Member]	Sep. 09, 2011 Minimum [Member] Times Square 42nd St [Member]	Jan. 18, 2011 Minimum [Member] Times Square 42nd St [Member] rooms	Sep. 09, 2011 Minimum [Member] Courtyard Denver Downtown [Member]	Sep. 09, 2011 Maximum [Member] Jw Marriot Denver at Cherry Creek [Member]	Sep. 09, 2011 Maximum [Member] Times Square 42nd St [Member]	Jan. 18, 2011 Maximum [Member] Times Square 42nd St [Member]	Sep. 09, 2011 Maximum [Member] Courtyard Denver Downtown [Member]	Jan. 18, 2011 Times Square 42nd St [Member]	Sep. 09, 2011 Jw Marriot Denver at Cherry Creek [Member]	May 19, 2011 Jw Marriot Denver at Cherry Creek [Member] rooms	Sep. 09, 2011 Radisson Lexington [Member]	Jun. 01, 2011 Radisson Lexington [Member]	Sep. 09, 2011 Courtyard Denver Downtown [Member] rooms	Jul. 22, 2011 Courtyard Denver Downtown [Member]
Business Acquisition [Line Items]
Number of Rooms Acquired						285								196		712	177
Business Acquisition, Cost of Acquired Entity, Cash Paid													$ 30,300,000			$ 336,800,000
Noncash or Part Noncash Acquisition, Debt Assumed													42,400,000				27,200,000
Business Acquisition, Cost of Acquired Entity, Liabilities Incurred													43,900,000
Business Acquisition, Cost of Acquired Entity, Purchase Price						128,000,000							74,200,000	74,200,000	336,765,000		46,185,000	46,200,000
Business Acquisition Cost of Acquisition Entity Purchase Price Per Room										450,000
Earnest Money Deposits												20,000,000
Expected Time to Complete Hotel Transaction					24 months				30 months
Retainage Depost Upon Additional Criteria Met												5,000,000
Base management fee percentage of Gross Revenue for First Three Years															2.50%
Base management fee percentage of Gross Revenue				2.25%			2.00%	3.25%			3.00%				3.00%
Incentive Management Fee percentage of Operating Profit				10.00%			10.00%	15.00%			15.00%				20.00%
Debt premium	1,653,000													1,500,000
Proceeds from Long-term Lines of Credit	$ 130,000,000	$ 0	$ 115,000,000														$ 15,000,000
Franchise Fee as Percentage of Gross Rooms Revenue													6.00%		2.75%		5.50%
Franchise Fee as Percentage of Food and Beverage Revenue													3.00%
Number of Termination Periods Available															2
Length of Termination Window	P60d
Management Agreement Term													5 years		10 years		5 years
Management Agreement Renewal Term													5 years		5 years		5 years
Franchise Fee Agreement Term													15 years				16 years