Organization and Summary of Significant Accounting Policies (policies) - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	Sep. 30, 2012 Entity	Sep. 30, 2012 Restaurant Segment Entity	Sep. 30, 2011 Restaurant	Sep. 28, 2012	May 09, 2007
Organization And Significant Accounting Policies [Line Items]
Number of franchises	17	17
Percentage of ownership in the remaining partnership after sale of interest		51.00%
Number of restaurants closed		2	2
Losses in connection with the sale of restaurants		$ (158,000)	$ (275,000)
Other income (expense)		(15,000)	22,000
Lease liability	82,000	82,000
Assets held for sale	1,380,000	1,380,000
Fair market value of assets held for sale	1,380,000	1,380,000
Charge to adjust assets held for sale to fair market value		61,000
Net proceeds used to pay off Notes payable		1,380,000
Repayment of notes payable		765,000
Obligation of future payment of rent	283,000	283,000
Deferred liabilities	652,000	652,000	728,000
Deferred gain on sale of building and improvements	282,000	282,000
Sale of building and improvements, gain recognition period in years		20 years
Total notes Receivable	20,000	20,000
Current receivable related to preferred stock sale				1,500,000
Total other current receivable	145,000	145,000
Franchise receivable	64,000	64,000
Proceeds from issuance of convertible preferred stock	1,500,000
Receivable from advertising co-operative fund	63,000	63,000
Percentage supply purchases from one vendor		100.00%
Number of operating segments		1
Interest rate swap agreement designated as cash flow hedging amount					$ 1,100,000
Stock Options
Organization And Significant Accounting Policies [Line Items]
Antidilutive securities which were not included in computing diluted EPS		175,289	166,022
Warrant
Organization And Significant Accounting Policies [Line Items]
Antidilutive securities which were not included in computing diluted EPS		70,871	101,704
Minimum
Organization And Significant Accounting Policies [Line Items]
Estimated useful lives of assets		3 years
Maximum
Organization And Significant Accounting Policies [Line Items]
Estimated useful lives of assets		8 years
Colorado
Organization And Significant Accounting Policies [Line Items]
Number of company-owned and joint venture drive-thru fast food hamburger restaurants	24	24
Number of franchises	14	14
Wyoming
Organization And Significant Accounting Policies [Line Items]
Number of franchises	2	2
North Dakota
Organization And Significant Accounting Policies [Line Items]
Number of franchises	1	1