Secured Debt Included in Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Less current portion of debt	$ (268)	$ (788)
Long-term portion of secured debt, net of $32 and $450 discount at June 30, 2014 and December 31, 2013, respectively	31,871	9,339
TriplePoint Capital LLC
Debt Instrument [Line Items]
Secured debt	970	11,069
Less: Unamortized debt discounts	(68)	(942)
Secured debt, net	902	10,127
Less current portion of debt	(268)	(788)
Long-term portion of secured debt, net of $32 and $450 discount at June 30, 2014 and December 31, 2013, respectively	634	9,339
TriplePoint Capital LLC \| TriplePoint - September 2010 Advance
Debt Instrument [Line Items]
Secured debt		917
TriplePoint Capital LLC \| TriplePoint - October 2011 Advance
Debt Instrument [Line Items]
Secured debt		6,657
TriplePoint Capital LLC \| TriplePoint - January 2012 Advance
Debt Instrument [Line Items]
Secured debt		3,495
TriplePoint Capital LLC \| TriplePoint - May 2014 Advance
Debt Instrument [Line Items]
Secured debt	$ 970

Secured debt gross.

No definition available.

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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- Definition

Carrying value as of the balance sheet date of the portion of long-term, collateralized debt obligations due within one year or the operating cycle, if longer. Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

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- Definition

Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets.

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