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Subsequent Events - Additional Information (Detail) | Jul. 28, 2015 USD ($) | Jul. 24, 2015 USD ($) $ / shares shares | Jul. 01, 2015 Firm shares | Oct. 02, 2014 USD ($) | Jul. 10, 2015 USD ($) | Jun. 30, 2015 USD ($) shares | Dec. 31, 2014 USD ($) shares
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Subsequent Event [Line Items] |  |  |  |  |  |  |
Total offering price of securities |  |  |  |  |  | $ 7,000 | $ 3,000
Common stock sold | shares |  |  |  |  |  | 200,000,000 | 200,000,000
Common stock, shares issued | shares |  |  |  |  |  | 13,926,076 | 6,597,155
Dubner Employment Agreement [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Bonus received |  |  |  | $ 100,000 |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Net proceeds from offering | $ 9,365,000 |  |  |  |  |  |
Subsequent Event [Member] | Private Placement [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Warrants to purchase share of common stock | $ / shares |  | $ 0.5 |  |  |  |  |
Exercise price of warrants | $ / shares |  | $ 10.00 |  |  |  |  |
Common stock, shares issued | shares |  | 640,205 |  |  |  |  |
Exercisable period for warrants |  | 6 months |  |  |  |  |
Warrant expiration period |  | 36 months |  |  |  |  |
Subsequent Event [Member] | Dubner Employment Agreement [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Bonus received | $ 150,000 |  |  |  |  |  |
Subsequent Event [Member] | Institutional Investor [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Total amount of the financing from an institutional investor |  | $ 10,000,000 |  |  |  |  |
Common stock sold | shares |  | 1,280,410 |  |  |  |  |
Sale price per share | $ / shares |  | $ 7.81 |  |  |  |  |
Subsequent Event [Member] | Common Stock [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Shares issued during the period for services | shares |  |  | 32,000 |  |  |  |
Number of consulting firms | Firm |  |  | 2 |  |  |  |
Subsequent Event [Member] | Maximum [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Total offering price of securities |  |  |  |  | $ 160,000,000 |  |

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