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Discontinued Operations (Detail) (USD $)	9 Months Ended	0 Months Ended
Discontinued Operations (Detail) (USD $)	Sep. 30, 2012	Jan. 31, 2012 Red Robin Beavercreek OH	Dec. 31, 2011 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
Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment, Net			1,533,655
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.

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- Definition

For the disposal group, including a component of the entity (discontinued operation), carrying value (net of accumulated depreciation and any write-downs) of tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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