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Debt (Detail) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Debt Instrument [Line Items] |  |  |
Less: debt - current, Principal | $ (2,568) |  |
Less: debt - current, Unamortized Discount | 45 |  |
Less: debt-current | (2,523) |  |
Debt - non-current, Principal | 17,432 | $ 10,000 |
Debt - non-current, Unamortized Discount | (61) | (128) |
Debt-non-current | 17,371 | 9,872 | [1]
Loan and Security Agreement |  |  |
Debt Instrument [Line Items] |  |  |
Total debt, Principal | 20,000 | 10,000 |
Total debt, Unamortized amount | (106) | (128) |
Total debt | $ 19,894 | $ 9,872 |
[1] | The financial information in this column was derived from audited consolidated financial statements included in the Company's 2014 Annual Report on Form 10-K.

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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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