XML 88 R72.htm IDEA: XBRL DOCUMENT
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Subsequent Events - Additional Information (Detail) - USD ($) |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 06, 2018 | Mar. 05, 2018 | Jan. 30, 2018 | Jan. 29, 2018 | Sep. 29, 2017 | Jun. 30, 2017 | May 17, 2017 | May 16, 2017 | Mar. 31, 2017 | Mar. 25, 2017 | Feb. 08, 2017 | Feb. 07, 2017 | Dec. 06, 2016 | Dec. 31, 2017
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds before deducting placement agent fee and offering expenses |  |  |  |  |  |  | $ 2,300,000 |  |  |  |  |  |  |
Cash from issuance of common stock, net of offering costs |  |  |  |  |  |  | $ 2,100,000 |  |  |  |  |  |  |
Warrants term |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years
Series B 10% Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares issued in stock offering, net offering costs, shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,162,000
Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares issued in stock offering, net offering costs, shares |  |  |  |  |  |  |  | 85,000 |  |  |  |  |  |
Common stock, price per share |  |  |  |  |  |  |  | $ 1.10 |  |  |  |  |  |
Chardan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock exercise price |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.155
Percentage of warrants to purchase shares of common stock on number of shares sold |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00%
Subsequent Event [Member] | Series B 10% Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Private Placement [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares issued in stock offering, net offering costs, shares | 2,857,144 |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, price per share | $ 1.75 |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Offering [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds before deducting placement agent fee and offering expenses | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Cash from issuance of common stock, net of offering costs | $ 4,475,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Offering [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock exercise price | $ 2.17 |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Chardan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock exercise price | $ 2.365 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of gross proceeds of offering | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of warrants to purchase shares of common stock on number of shares sold | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants term | 5 years 6 months |  |  |  |  |  |  |  |  |  |  |  |  |
Andrew Arno [Member] | Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares issued in stock offering, net offering costs, shares |  |  |  |  |  |  |  | 50,000 |  |  |  |  |  |
Common stock, price per share |  |  |  |  |  |  |  | $ 1.10 |  |  |  |  |  |
Secured Promissory Note [Member] | Steven L. and Monique P. Elfman [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes due date |  |  |  |  |  | Sep. 25, 2017 |  |  |  |  | Mar. 24, 2017 |  |  | Mar. 24, 2017
Debt instrument extended maturity date |  |  |  |  |  | Feb. 11, 2018 |  |  | Jun. 23, 2017 |  |  |  |  |
Secured Promissory Note [Member] | Steven L. and Monique P. Elfman [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes due date |  |  | Feb. 11, 2018 | Aug. 18, 2017 |  |  |  |  |  |  |  |  |  |
Secured Promissory Note [Member] | William W. Smith, Jr. and Dieva L. Smith [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes due date |  |  |  |  |  | Sep. 25, 2017 |  |  |  |  |  | Mar. 24, 2017 | Dec. 14, 2016 |
Debt instrument extended maturity date |  |  |  |  |  | Jul. 25, 2018 |  |  |  | Jun. 26, 2017 |  |  |  |
Secured Promissory Note [Member] | William W. Smith, Jr. and Dieva L. Smith [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes due date |  |  | Jul. 25, 2018 | Jun. 26, 2017 |  |  |  |  |  |  |  |  |  |
Debt instrument extended maturity date |  | Mar. 25, 2020 |  |  |  |  |  |  |  |  |  |  |  |
Secured Promissory Note [Member] | Next Generation TC FBO Andrew Arno IRA 1663 [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes due date |  |  | Jul. 25, 2018 | Aug. 24, 2017 |  |  |  |  |  |  |  |  |  |
Debt instrument extended maturity date |  | Mar. 25, 2020 |  |  |  |  |  |  |  |  |  |  |  |
Secured Promissory Note [Member] | Andrew Arno [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes due date |  |  | Jul. 25, 2018 | Aug. 24, 2017 |  |  |  |  |  |  |  |  |  |
Debt instrument extended maturity date |  | Mar. 25, 2020 |  |  |  |  |  |  |  |  |  |  |  |

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