Stockholders' Equity - Additional Information (Detail) - USD ($)	1 Months Ended		3 Months Ended
	Apr. 19, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 07, 2017	Dec. 31, 2016	Dec. 19, 2016	Mar. 09, 2016
Class of Stock [Line Items]
Common stock, par value (in dollars per share)			$ 0.0001		$ 0.0001
Preferred stock, shares outstanding			0		0
Closing price of shares (in dollars per share)							$ 1.79
Compensation cost not yet recognized			$ 524,521
Compensation cost not yet recognized, period for recognition			3 years
Series E Convertible Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares outstanding			7,000		0
Series D Preferred Stock
Class of Stock [Line Items]
Shares converted				5,405.975
Convertible preferred stock, shares issued upon conversion				2,995,000
Series D Convertible Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares outstanding			14,052.93		17,202.65
2017 Offering
Class of Stock [Line Items]
Net proceeds from issuance of stock and warrants			$ 7,000,000
Net proceeds from issuance of stock and warrants			$ 6,300,000
2017 Offering | Series E Convertible Preferred Stock
Class of Stock [Line Items]
Shares issued during period (in shares)			7,000
Shares issued (in dollars per share)			$ 1,000
Convertible preferred stock, conversion price (in dollars per share)			$ 0.70
Dividends, preferred stock, total			$ 4,000,000
2017 Offering | Series D Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares outstanding			14,052.93
Shares converted			3,149.72
2017 Offering | Series D Convertible Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares outstanding			19,458.90
Common Stock
Class of Stock [Line Items]
Additional shares owed to investor						4,727,821
Maximum percent of outstanding common stock owned by investor				4.99%
Conversion of preferred stock, common shares delivered			300,000
Conversion of preferred stock, common shares undelivered			4,427,821
Common Stock | 2017 Offering
Class of Stock [Line Items]
Shares of common stock available to purchase			10,000,000
Common stock, par value (in dollars per share)			$ 0.0001
Number of securities available to purchase by warrants, held by investor			23,475,870
Convertible preferred stock, shares issued upon conversion			1,745,000
Warrants | 2017 Offering
Class of Stock [Line Items]
Exercise price of warrants or rights (in dollars per share)			$ 0.70
Class of warrant exercisable period			5 years
Warrants not settleable in cash, fair value disclosure			$ 3,490,000
Exercise price (in dollars per share)			$ 0.62
Expected volatility			70.20%
Risk free interest rate			2.04%
Expected Term			5 years
Expected dividends			0.00%
2015 Management Incentive Compensation | 2016 Issuance
Class of Stock [Line Items]
Shares issued during period (in shares)		178,079
Stock issued during period, value		$ 318,761
Subsequent Event | Common Stock
Class of Stock [Line Items]
Conversion of preferred stock, common shares delivered	1,407,820
Conversion of preferred stock, common shares undelivered	3,020,001