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Revenue and Vendor Concentrations - Additional Information (Detail) - USD ($)	3 Months Ended												12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Revenue, Major Customer [Line Items]
Revenue	$ 7,865,853	$ 6,439,995	$ 5,672,326	$ 5,389,322	$ 5,543,959	$ 4,659,724	$ 4,484,138	$ 4,462,524	$ 4,387,232	$ 3,882,027	$ 3,224,262	$ 3,309,664	$ 25,367,496	$ 19,150,345	$ 14,803,185
Accounts receivable, net	3,936,687				2,955,350								3,936,687	2,955,350
Customer Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Revenue													$ 6,270,927	$ 5,668,973	$ 3,607,417
Customer Concentration Risk [Member] \| Sales Revenue Net [Member]
Revenue, Major Customer [Line Items]
Total revenue, percentage													10.00%	10.00%	10.00%
Geographic Concentration Risk [Member] \| Sales Revenue Net [Member]
Revenue, Major Customer [Line Items]
Total revenue, percentage													5.00%	4.00%	3.00%
Customer One [Member] \| Customer Concentration Risk [Member] \| Sales Revenue Net [Member]
Revenue, Major Customer [Line Items]
Total revenue, percentage													25.00%	30.00%	24.00%
Major Customers [Member] \| Customer Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Accounts receivable, net	$ 1,064,243				$ 1,431,163				$ 588,475				$ 1,064,243	$ 1,431,163	$ 588,475
Channel Partners [Member] \| Supplier Concentration Risk [Member] \| Sales Revenue Net [Member]
Revenue, Major Customer [Line Items]
Total revenue, percentage													10.00%