Stockholders Equity - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended				1 Months Ended
	Feb. 28, 2013	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2011	Feb. 28, 2013 Partners for Growth III, L.P.	May 31, 2010 Michigan Economic Development Corporation Loan Agreement	Feb. 28, 2013 2010 Warrants	Nov. 29, 2010 2010 Warrants	Nov. 29, 2010 2010 Warrants Minimum	Feb. 28, 2013 Warrant 1	Feb. 28, 2013 Warrant 2
Stockholders Equity Note [Line Items]
Issuance of warrants to Robin Risser and Steve Williamson												267,196
Warrant exercisable period												5 years
Exercise price of warrant												1.404	1.17	0.50	1.00
New exercise price of warrants											$ 1.376
Issuance of warrants for common stock		1,462,000		1,462,000					1,195,000
Warrant exercise period	5 years
Warrants exercisable														995,000	200,000
Expense for change in fair value of warrant liability		$ 107,000	$ (4,000)	$ (89,000)	$ 13,000	$ 168,000
Fair value of warrants		381,000		381,000		292,000	292,000	26,000
Fair value assumption, dividend yield				0.00%
Accrued and unpaid interest										$ 562,336
Conversion of accrued and unpaid interest into class A common stock										1,041,363
Common stock price per share										$ 0.54