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Redeemable Convertible Preferred Stock - Additional Information (Detail) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
May 02, 2012 USD ($) | Dec. 31, 2016 USD ($) Installment $ / shares shares | Dec. 31, 2015 USD ($) $ / shares shares | Apr. 30, 2012 shares | Apr. 13, 2012 $ / shares shares
Temporary Equity [Line Items] |  |  |  |  |
Redeemable convertible preferred stock, shares issued |  | 1,000,000 | 1,000,000 |  |
Common stock, shares issued |  | 8,499,508 | 8,385,929 |  | 1,000,000
Number of warrants |  | 325,000 |  |  |
Redeemable convertible preferred stock, shares authorized |  | 1,000,000 | 1,000,000 |  |
Preferred stock and warrants value issued | $ | $ 5,000,000 |  |  |  |
Warrants value | $ |  | $ 840,000 |  |  |
Accretion amount | $ |  | $ 50,000 | $ 50,000 |  |
Warrants Exercise Price Tranche One |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Warrant exercise price per share | $ / shares |  |  |  |  | $ 6.00
Number of warrants |  |  |  |  | 125,000
Warrants Exercise Price Tranche Two |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Warrant exercise price per share | $ / shares |  |  |  |  | $ 7.00
Number of warrants |  |  |  |  | 200,000
Securities Purchase Agreement |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Number of warrants |  |  |  |  | 325,000
Series A Convertible Preferred Stock |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Redeemable convertible preferred stock, stock price per share | $ / shares |  |  |  |  | $ 5.00
Redeemable convertible preferred stock, shares authorized |  |  |  | 1,000,000 |
Cumulative dividends at a rate |  | 6.00% |  |  |
Preferred stock value | $ | $ 4,160,000 |  |  |  |
Series A Convertible Preferred Stock | Accounts Payable and Other Accrued Expenses |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Total accrued but unpaid dividends | $ |  | $ 230,000 | $ 230,000 |  |
Series A Convertible Preferred Stock | Scenario, Plan |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Redeemable convertible preferred stock, liquidation preference per share | $ / shares |  | $ 5.00 |  |  |
Number of redemption price, accrued and unpaid dividends installment payments | Installment |  | 36 |  |  |
Annual interest rate on redemption value payable |  | 6.00% |  |  |
Redemption price per share | $ / shares |  | $ 5.00 | $ 5.00 |  |
Series A Convertible Preferred Stock | Scenario, Plan | Maximum |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Majority outstanding shares redeemable date |  | Apr. 30, 2017 |  |  |
Series A Convertible Preferred Stock | Securities Purchase Agreement |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |
Redeemable convertible preferred stock, shares issued |  |  |  |  | 1,000,000
Warrant exercise price per share | $ / shares |  |  |  |  | $ 5.00

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- Definition The per share liquidation preference (or restrictions) of stock classified as temporary equity that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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