Stock-Based Compensation - Schedule of Unrecognized Compensation Cost Related to Unvested Stock Options (Details)	Sep. 30, 2015 USD ($)
Unrecognized compensation cost related to unvested stock options	$ 4,333,457
2015 [Member]
Unrecognized compensation cost related to unvested stock options	724,254
2016 [Member]
Unrecognized compensation cost related to unvested stock options	2,299,586
2017 [Member]
Unrecognized compensation cost related to unvested stock options	988,703
2018 [Member]
Unrecognized compensation cost related to unvested stock options	$ 320,914