Significant Customers & Geographical Information - Additional Information (Detail)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015 USD ($) Customer	Sep. 30, 2014 Customer	Sep. 30, 2015 USD ($) Customer	Sep. 30, 2014 Customer	Dec. 31, 2014 USD ($) Customer
Entity Wide Information Revenue From External Customer [Line Items]
Number of customers | Customer			3		2
Accounts receivable	$ 1,571,782		$ 1,571,782		$ 1,099,804
Customer One [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Accounts receivable	1,088,904		1,088,904
Customer Two [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Accounts receivable	306,221		306,221
Customer Three [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Accounts receivable	$ 176,657		$ 176,657
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Number of customers | Customer	2	2	2	2
Concentration risk percentage	33.00%	47.00%	40.00%	46.00%
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Customer One [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Concentration risk percentage	15.00%	21.00%	22.00%	21.00%
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Customer Two [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Concentration risk percentage	18.00%	26.00%	18.00%	25.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Concentration risk percentage			69.00%		69.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Concentration risk percentage			47.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Concentration risk percentage			13.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Three [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Concentration risk percentage			9.00%