Stock Options and Warrants - Warrants Issued with Common Stock - Additional Information (Detail) - $ / shares
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Sep. 10, 2014 |
Aug. 06, 2014 |
Jun. 26, 2014 |
May. 29, 2014 |
Mar. 12, 2013 |
Jan. 22, 2013 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Aug. 31, 2013 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of shares of common stock sold |
29,630
|
40,000
|
36,667
|
22,223
|
33,334
|
67,500
|
|
|
|
| Warrant term |
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|
|
|
16,667
|
33,750
|
127,508,118
|
45,650,654
|
|
| Warrants exercisable price |
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|
|
|
$ 30.00
|
$ 30.00
|
|
|
$ 0.25
|
| Warrant term |
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|
|
5 years
|
5 years
|
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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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| Number of shares of common stock sold |
4,444,445
|
6,000,000
|
5,500,000
|
3,333,333
|
5,000,000
|
10,125,000
|
|
|
|
| Warrant term |
|
|
|
|
2,500,000
|
5,062,500
|
|
|
|
| Warrants exercisable price |
|
|
|
|
$ 0.20
|
$ 0.20
|
|
|
|
| Co-Chairman and Chief Executive Officer [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Warrant term |
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|
1,667
|
|
|
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| Warrant term |
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5 years
|
|
|
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|
| Co-Chairman and Chief Executive Officer [Member] | Previously Reported [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Warrant term |
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|
250,000
|
|
|
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