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Warrants - Summary of Warrants Outstanding (Detail)
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Mar. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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|---|---|---|---|
| Class of Warrant or Right [Line Items] | |||
| Warrants Outstanding | 2,537,094 | 2,747,094 | 3,235,982 |
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Range 1 [Member]
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| Class of Warrant or Right [Line Items] | |||
| Exercise Price | 1.50 | ||
| Warrants Outstanding | 361,169 | ||
| Expiration Dates | Jul. 31, 2017 | ||
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Range 2 [Member]
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| Class of Warrant or Right [Line Items] | |||
| Exercise Price | 2.00 | ||
| Warrants Outstanding | 2,170,925 | ||
| Expiration Dates | Mar. 23, 2015 | ||
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Range 3 [Member]
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| Class of Warrant or Right [Line Items] | |||
| Exercise Price | 10.00 | ||
| Warrants Outstanding | 5,000 | ||
| Expiration Dates | Apr. 15, 2014 |