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Fair Value Measurement - Additional Information (Detail) (Hercules Note [Member], USD $)
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Dec. 31, 2013
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Hercules Note [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
| Note payable | $ 13,700,000 |
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- Definition
Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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