Equity Transactions - Additional Information (Detail) - USD ($)							12 Months Ended
	Nov. 07, 2018	May 03, 2018	Apr. 19, 2018	Mar. 06, 2018	Sep. 29, 2017	Sep. 06, 2016	Dec. 31, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Repayment of short and long-term debt obligations	$ 3,200,000
Common Stock [Member]
Class of Stock [Line Items]
Common stock, issued and sold to investors								9,267,000
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, conversion price per share					$ 1.14
Convertible preferred stock, terms of conversion							In the event that the trading price of the Company’s Common Stock for 20 consecutive trading days (as determined in the Certificate of Designation) exceeds 400% of the then effective Conversion Price of the Series B Preferred Stock (initially set at $1.14), the Company may force conversion of the Series B Preferred Stock into shares of Common Stock or elect to redeem the Series B Preferred Stock for cash.
Preferred stock threshold consecutive trading days					20 days
Trading price of common stock exceeds conversion price, percentage					400.00%
Convertible preferred stock, right to increase in dividend percentage upon stock price trigger					12.00%
Series B Preferred Stock [Member] | Smith Warrant [Member]
Class of Stock [Line Items]
Preferred stock, shares converted into common stock					2,750
Series B Preferred Stock [Member] | Andrew Arno [Member]
Class of Stock [Line Items]
Preferred stock, shares converted into common stock					50
Offering [Member]
Class of Stock [Line Items]
Gross proceeds from issuance of preferred stock					$ 2,700,000
Net proceeds from issuance of preferred stock					2,500,000
Preferred stock liquidation damage payments			$ 48,000
Offering [Member] | Smith Warrant [Member]
Class of Stock [Line Items]
Debt instrument, principal amount					2,800,000
Offering [Member] | Andrew Arno [Member]
Class of Stock [Line Items]
Debt instrument, principal amount					$ 100,000
Offering [Member] | Series B Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, issued and sold to investors					5,500
Preferred stock, dividend rate					10.00%
Preferred stock, price per share					$ 1,000
Preferred stock, issued and sold to investors, purchase price					$ 5,500,000
Preferred stock, conversion price per share					$ 1.14
Preferred stock, shares converted into common stock					4,824,562
Preferred stock, dividend payment terms							The holders of Series B Preferred Stock were entitled to receive cumulative dividends out of funds legally available thereof at a rate of ten percent (10%) per annum, payable (i) when and as declared by the Board of Directors, in quarterly installments on March 1, June 1, September 1 and December 1, (ii) upon conversion into Common Stock with respect the Series B Preferred Stock being converted, and (iii) upon redemption of the Series B Preferred Stock by the Company.
March 2018 Offering [Member]
Class of Stock [Line Items]
Gross proceeds before deducting transaction fees and other expenses				$ 5,000,000
Cash proceeds from issuance of common stock, net of offering costs				$ 4,500,000
March 2018 Offering [Member] | Common Stock [Member]
Class of Stock [Line Items]
Common stock, issued and sold to investors				2,857,144
Common stock, price per share				$ 1.75
Common stock exercise price				2.17
March 2018 Offering [Member] | Warrant [Member]
Class of Stock [Line Items]
Triggering event charges						$ 11,000
March 2018 Offering [Member] | Unterberg Koller Capital Fund L P [Member] | Maximum [Member]
Class of Stock [Line Items]
Common stock exercise price						$ 2.14
March 2018 Offering [Member] | Unterberg Koller Capital Fund L P [Member] | Minimum [Member]
Class of Stock [Line Items]
Common stock exercise price						$ 2.07
Chardan Capital Markets, LLC [Member]
Class of Stock [Line Items]
Common stock exercise price				$ 2.365
Percentage of gross proceeds of offering	6.00%	7.00%		8.00%
Percentage of warrants to purchase shares of common stock on number of shares sold				3.00%
Warrants term				5 years 6 months
May 2018 Offering [Member]
Class of Stock [Line Items]
Gross proceeds before deducting transaction fees and other expenses		$ 7,000,000
Cash proceeds from issuance of common stock, net of offering costs		$ 6,300,000
May 2018 Offering [Member] | Roth Capital Partners, LLC [Member]
Class of Stock [Line Items]
Percentage of gross proceeds of offering		2.00%
May 2018 Offering [Member] | Common Stock [Member]
Class of Stock [Line Items]
Common stock, issued and sold to investors		3,170,000
Common stock, price per share		$ 2.21
Common stock exercise price		$ 2.11
November 2018 Offering [Member]
Class of Stock [Line Items]
Gross proceeds before deducting transaction fees and other expenses	$ 7,500,000
Cash proceeds from issuance of common stock, net of offering costs	$ 6,900,000
November 2018 Offering [Member] | Roth Capital Partners, LLC [Member]
Class of Stock [Line Items]
Percentage of gross proceeds of offering	2.00%
November 2018 Offering [Member] | Common Stock [Member]
Class of Stock [Line Items]
Common stock, issued and sold to investors	3,239,785
Common stock, price per share	$ 2.32
Common stock exercise price	$ 2.20