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Related Party Transactions - Additional Information (Detail) (USD $)
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3 Months Ended | 12 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Mar. 31, 2014
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Mar. 31, 2013
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Dec. 31, 2013
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Apr. 30, 2014
Subsequent Event
Restricted Stock
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Mar. 31, 2014
Aston Capital Limited Liability Company
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Dec. 31, 2013
Aston Capital Limited Liability Company
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Apr. 30, 2013
Aston Capital Limited Liability Company
Issuance of Equity
Restricted Stock
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Apr. 30, 2014
Aston Capital Limited Liability Company
Subsequent Event
Note
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Apr. 30, 2014
Aston Capital Limited Liability Company
Subsequent Event
Tranche A loan
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Apr. 30, 2014
Aston Capital Limited Liability Company
Subsequent Event
Tranche B loan
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Mar. 31, 2014
RVL One Limited Liability Company
Agreement
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Dec. 31, 2013
RVL One Limited Liability Company
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Dec. 31, 2012
RVL One Limited Liability Company
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| Transactions with Third Party [Line Items] | |||||||||||||
| Debt instrument amount | $ 3,500,000 | $ 11,800,000 | $ 1,000,000 | $ 10,800,000 | |||||||||
| Interest rate of debt | 9.00% | ||||||||||||
| Debt instrument maturity date | Apr. 01, 2015 | ||||||||||||
| Number of notes payable | 2 | ||||||||||||
| Accrued interest | 30,000 | ||||||||||||
| Number of separate investment agreements | 4 | ||||||||||||
| Proceeds from issuance of convertible preferred stock | 26,000,000 | ||||||||||||
| Proceeds from issuance of common stock | (32,000) | 4,822,000 | 5,000,000 | 192,000 | |||||||||
| Number of common stock shares issued | 82,634,000 | 82,095,000 | 75,000 | ||||||||||
| Loans Receivable, Commercial, Trade Financing | 9,900,000 | ||||||||||||
| Restricted common stock agreed to be issued for services | 500,000 | ||||||||||||
| Restricted common stock agreed to be issued for services, vesting period | 3 years | ||||||||||||
| Restricted common stock agreed to be issued for services, vesting date | Sep. 25, 2013 | ||||||||||||
| Number of shares authorized for grant | 300,000 | ||||||||||||
| Vesting period | 3 years | ||||||||||||
| Monthly payment for underlying lease | 21,355 | ||||||||||||
| Related party transaction costs incurred | 92,000 | 68,000 | 33,000 | 343,000 | |||||||||
| Amounts due to related party | $ (428,000) | ||||||||||||