Fair Value Measurements - Summary of Reconciliation of Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Detail) - Fair Value Measurement, Recurring [Member] - Warrant Liability [Member]	9 Months Ended
	Sep. 30, 2016 USD ($)
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Issuance of warrants	$ 4,899,459
Change in fair value upon re-measurement	198,945
Balance at September 30, 2016	$ 5,098,404