Subsequent Event - Additional Information (Detail) - USD ($)		9 Months Ended
	Oct. 12, 2016	Sep. 30, 2016	Sep. 30, 2015	Nov. 14, 2016	Jan. 21, 2016	Nov. 30, 2015	Jan. 31, 2014
Subsequent Event [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights					1,416,668
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 2.005			$ 1.79		$ 30.40
Payments for Repurchase of Preferred Stock and Preference Stock		$ 2,500,000	$ 0
Fortress Agreement [Member]
Subsequent Event [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights						$ 2.54
Subsequent Event
Subsequent Event [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	6,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1.00
Proceeds from Issuance or Sale of Equity	$ 6,000,000
Sale of Stock, Number of Shares Issued in Transaction	6,000,000
Shares Issued, Price Per Share	$ 1.00
Payments for Repurchase of Preferred Stock and Preference Stock	$ 1,300,000
Payments for Operating Activities	$ 3,800,000
Percentage Of Increase In Preferred Stock Redemption Premium	15.00%
Proceeds from Issuance Initial Public Offering	$ 5,100,000
Subsequent Event | July 2016 Warrants [Member]
Subsequent Event [Line Items]
Reduction In Exercise Price Of Warrants	$ 1.43
Subsequent Event | May 2016 Warrants [Member]
Subsequent Event [Line Items]
Reduction In Exercise Price Of Warrants	$ 1.86
Subsequent Event | Fortress Agreement [Member]
Subsequent Event [Line Items]
Minimum Cash Balance Required To Maintain				$ 1,000,000