Discontinued Operations (Detail) (USD $)	3 Months Ended	0 Months Ended
Mar. 31, 2012	Jan. 31, 2012 Red Robin Beavercreek OH
Significant Acquisitions and Disposals, Acquisition Costs or Sale Proceeds		$ 1,811,647
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax		277,992
SaleProceedsDistributionMadeToMemberOrLimitedPartner	$ 92,525
ReturnOfCapitalDistributionMadeToMemberOrLimitedPartnerDistributionsPaidPerUnit (in Dollars per share)	$ 0.05

Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 47

-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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 43

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 205

-SubTopic 20

-Section 50

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