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Notes Payable | 6 Months Ended
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Jun. 30, 2013
Notes Payable | Notes Payable In October 2010, we entered into a loan and security agreement with Oxford Finance LLC, or Oxford. We refer to this loan agreement, as amended from time to time, as the Loan Agreement. Under the Loan Agreement, we had $20.0 million in principal outstanding indebtedness as of June 30, 2013 and December 31, 2012. Interest accrues at a fixed annual rate of 9.25%. The Loan Agreement provides for interest-only payments through December 31, 2013. Beginning on January 1, 2014, payments of principal and interest are payable for 36 months, in arrears. All unpaid principal and accrued and unpaid interest are due and payable on the maturity date, December 1, 2016. As security for our obligations under the Oxford agreement, we granted Oxford a security interest in substantially all of our assets, excluding intellectual property. As of June 30, 2013, the remaining unamortized discount and debt issuance costs associated with the debt were $1.2 million and $142,000, respectively.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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