Summary of Significant Accounting Policies and Significant Judgments and Estimates - Additional Information (Detail) (USD $)	3 Months Ended
	Dec. 29, 2012	Dec. 24, 2011	Sep. 29, 2012
Basis Of Presentation And Significant Accounting Policies [Line Items]
Allowance for accounts receivable	$ 25,000		$ 25,000
Valuation allowance for deferred tax assets	1,100,000
Number of Shares, Granted	1,000	3,500
Weighted average fair value, Granted	$ 3.29	$ 3.43
Unrecognized compensation cost related to options granted	409,665	625,373
Weighted average period of compensation cost	2 years 9 months 18 days
Shares authorized for issuance	750,000
Shares outstanding	244,107		245,202
Fair market value term period	10 years
Intrinsic value of outstanding and exercisable options	$ 38,154	$ 229,987
Minimum [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]
Vesting periods	0 years
Maximum [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]
Vesting periods	5 years
2001 Stock Option Plan [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]
Share available for grants	0
2005 Non-Statutory Stock Option Plan [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]
Share available for grants	47,028
2010 Equity Incentive Plan [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]
Share available for grants	54,481