Commitments and Contingencies - Additional Information (Detail)	3 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2014 EUR (€)	Dec. 31, 2014 Patents [Member]
Commitments and Contingencies [Line Items]
Additional shares of common stock to stockholders	480,059	480,059
License agreement commencement date	2006-03	2006-03
Annual minimum payments for licenses	$ 243,000	€ 200,000
Exchange rate relating to license payment	$ 1.2155
Future minimum payments associated with license	$ 3,100,000
Patent expiry date			2027-09