Stock Options and Warrants - 2013 S-1 July Registered Offering - Additional Information (Detail) - $ / shares
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12 Months Ended |
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Jul. 24, 2013 |
May. 12, 2008 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Nov. 30, 2014 |
Oct. 31, 2014 |
Feb. 28, 2014 |
Aug. 31, 2013 |
Mar. 12, 2013 |
Jan. 22, 2013 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Warrants exercisable price |
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$ 0.25
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$ 30.00
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$ 30.00
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| Expiration date of warrants |
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Oct. 24, 2013
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| Series A Warrants [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Expiration date of warrants |
Jul. 24, 2018
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| Previously Reported [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Warrants exercisable price |
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$ 0.20
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$ 0.20
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| Series B Warrants [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of units issued |
133,334
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16,754,822
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| Expiration date of warrants |
Oct. 24, 2013
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Oct. 24, 2013
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| Series B Warrants [Member] | Previously Reported [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of units issued |
20,000,000
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| Common Stock [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of units issued |
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16,754,822
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| Number of shares/warrants included in units |
133,334
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| Common Stock [Member] | Previously Reported [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of shares/warrants included in units |
20,000,000
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| Series A Preferred Stock [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of units issued |
20,000,000
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| Warrants exercisable price |
$ 22.50
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| Series A Preferred Stock [Member] | Previously Reported [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Warrants exercisable price |
$ 0.15
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| Series B Preferred Stock [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of units issued |
133,334
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400,000
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| Warrants exercisable price |
$ 22.50
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$ 75.0000
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$ 8.6400
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$ 9.6705
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$ 6.7200
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| Series B Preferred Stock [Member] | Previously Reported [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of units issued |
20,000,000
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| Warrants exercisable price |
$ 0.15
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$ 0.50000
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$ 0.05760
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$ 0.06447
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$ 0.05670
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