Summary of Significant Accounting Policies and Significant Judgments and Estimates - Additional Information (Detail) (USD $)	3 Months Ended			6 Months Ended
	Mar. 29, 2014	Dec. 28, 2013	Mar. 30, 2013	Mar. 29, 2014	Mar. 30, 2013	Sep. 28, 2013
Basis Of Presentation And Significant Accounting Policies [Line Items]
Expected period of revenue recognized pursuant to proportional performance				1 year
Allowance for accounts receivable	$ 25,000			$ 25,000		$ 25,000
Valuation allowance for deferred tax assets	2,100,000			2,100,000
Fair value measurements, transfers between levels	0			0
Excess tax benefits	0		0	0	0
Number of Shares, Granted	14,000	200		14,200	16,500
Weighted average fair value, Granted				$ 4.53	$ 2.89
Unrecognized compensation cost related to options granted	210,558			210,558		289,838
Weighted average period of compensation cost				1 year 8 months 12 days
Shares authorized for issuance	750,000			750,000
Shares outstanding	268,185	257,782		268,185		257,582
Fair market value term period				10 years
Intrinsic value of outstanding and exercisable options	$ 138,632			$ 138,632		$ 159,521
2001 Stock Option Plan [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]
Share available for grants	0			0
2005 Non-Statutory Stock Option Plan [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]
Share available for grants	19,723			19,723
2010 Equity Incentive Plan [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]
Share available for grants	56,903			56,903
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