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Revolving Line of Credit and Term Loan - Additional Information (Detail) (USD $)
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12 Months Ended | 0 Months Ended | 12 Months Ended | |||||
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Dec. 31, 2013
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Jun. 30, 2013
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Dec. 31, 2013
Term Loan
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Mar. 23, 2014
Subsequent Event
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Mar. 21, 2014
Subsequent Event
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Mar. 21, 2014
Subsequent Event
Term Loan
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Dec. 31, 2013
Silicon Valley Bank
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Dec. 31, 2013
Revolving Credit Streamline Facility
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| Line of Credit Facility [Line Items] | ||||||||
| Line of credit facility, maximum borrowing capacity | $ 6,500,000 | |||||||
| Borrowing Base | 75.00% | |||||||
| Bear interest rate | Greater of the bank's prime rate or 4.00% plus 4.75% | Greater of the bank's prime rate or 4.00% plus 2.00% | ||||||
| Interest rate | 4.00% | 4.00% | ||||||
| Line of credit facility, expiration | Sep. 30, 2014 | |||||||
| Interest rate excluding prime rate | 4.75% | 2.00% | ||||||
| Line of credit, facility fee | 0.50% | |||||||
| Reserve credit of subsidiary | 500,000 | |||||||
| Final payment fee | 40,000 | 60,000 | ||||||
| Termination fee | 8,400,000 | |||||||
| Borrowings outstanding under line of credit facility | 0 | 0 | ||||||
| Loan amount | 2,000,000 | 2,000,000 | ||||||
| Bank fee paid | $ 10,000 | |||||||