Notes Payable (Detail) (USD $)	1 Months Ended
	Mar. 31, 2011	Sep. 30, 2009	Mar. 01, 2013
Debt Instrument [Line Items]
Notes payable	$ 3,532,700		$ 5,797,995
Equipment note, term	15 years	10 years
Equipment note, interest rate	3.52%	4.25%
Equipment note, face amount	$ 2,900,000	$ 4,000,000