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Shareholders' Equity - Company's Outstanding and Exercisable Warrants (Detail)
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Dec. 31, 2013
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Sep. 14, 2012
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|---|---|---|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Warrants exercisable price per share | 6.00 | |
| Warrants issued / Retained warrants | 2,747,094 | |
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Class of Warrant One [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Warrants exercisable price per share | 1.50 | |
| Warrants issued / Retained warrants | 571,169 | |
| Expiration Dates | Jul. 30, 2017 | |
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Class of Warrant Two [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Warrants exercisable price per share | 2.00 | |
| Warrants issued / Retained warrants | 2,170,925 | |
| Expiration Dates | Mar. 23, 2015 | |
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Class of Warrant Three [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Warrants exercisable price per share | 10.00 | |
| Warrants issued / Retained warrants | 5,000 | |
| Expiration Dates | Apr. 15, 2014 |