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Debt | 12 Months Ended
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Dec. 31, 2016
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Debt | 8. Debt Senior Secured Term Loan In April 2013, as amended in June 2014, the Company entered into a senior secured term loan arrangement (the "Secured Loan Arrangement") with ROS Acquisition LP ("ROS"). The Secured Loan Arrangement provided for up to $40.0 million in borrowing capacity ("Credit Agreement"), a warrant to purchase shares of Common Stock, and an agreement to pay royalties on Company revenues ("Royalty Agreement"). The Company borrowed $20.0 million on the effective date of the Credit Agreement. The Credit Agreement provided for an interest rate equal to the greater of (a) LIBOR or (b) 1% per annum plus the applicable margin of 8% per annum or 9% floor on the outstanding balance of the term loan. The Royalty Agreement obligated the Company to make royalty payments of 1% applied to total Company fiscal year revenues of up to $50.0 million and 1.5% applied to fiscal year incremental revenues above $50.0 million. For the year ended December 31, 2015, the Company incurred approximately $1.4 million and $7.1 million in interest expenses under the Credit Agreement and royalty expenses under the Royalty Agreement, respectively. The $7.1 million in royalty expense included $1.8 million in royalty due and the remainder was for part of the $28.0 million pay-off to ROS. Please refer to paragraph below for pay-off details. For the year ended December 31, 2014, the Company incurred approximately $1.8 million and $2.2 million in interest expenses under the Credit Agreement and royalty expenses under the Royalty Agreement, respectively. The interest on the loan is set forth in the financial statements as interest expense below loss from operations. The effective yield was approximately 20.9% and 19.8%, respectively, for the year ended December 31, 2015 and 2014, excluding royalty and interest early termination payments. Under the terms of the Secured Loan Arrangement, the Company issued ROS a warrant to purchase 376,691 shares of common stock with an exercise price of $2.3229 per share. The Credit Agreement principal was due and payable on April 18, 2019. The Company could at its option, prepay the term loan borrowings subject to a prepayment premium equivalent to 10% of the outstanding principal. Prepayment of the amount due under the Credit Agreement did not eliminate the royalty payment obligation, which if not terminated, would have expired no later than April 18, 2023. In October 2015, the Company made a payment of $28.0 million to ROS to extinguish the amounts owed, which included the principal and royalty obligation. This terminated the term loan, royalty and all associated liens securing the Credit Agreement. Credit Line Agreement In September 2015, the Company entered into the Credit Line with UBS providing for a $50.0 million revolving line of credit which can be drawn down in increments at any time. In October 2015, the Company borrowed $32.0 million against the Credit Line, primarily to prepay all outstanding amounts under the Secured Loan Arrangement with ROS. The Credit Line bears interest at 30-day LIBOR plus 0.65%, and equals approximately 0.84% per annum at the time of the draw. In November, 2015, the Company borrowed an additional $10.0 million which bears interest at approximately 0.85% per annum. Interest of $0.1 million was accrued during the year ended December 31, 2015. In June 2016, the Company borrowed an additional $8.0 million from the Credit Line and repaid $1.0 million, thereby resulting in a remaining $0.4 million available for draw down, net of accrued interest of $0.6 million as of December 31, 2016. The outstanding balance of the Credit Line, including accrued interest, was $49.6 million as of December 31, 2016. The Credit Line is secured by a first priority lien and security interest in the Company’s money market and marketable securities held in its managed investment account with UBS. UBS has the right to demand full or partial payment of the Credit Line Obligations and terminate the Credit Line, in its discretion and without cause, at any time. Equipment Financing Facility In April 2013, the Company entered into an equipment financing facility (the “Equipment Financing Facility”) with a financial institution pursuant to which the Company could borrow up to $5.0 million to fund equipment purchases. The financial institution maintained a security interest in the underlying equipment until payment in full of the loan. The loan bore interest at the financial institution's prime reference rate (defined as the 30-day LIBOR rate plus 2.50%) plus 4.10%, which equaled 7.35% upon closing of the agreement. In December 2014, the Company amended the Equipment Financing Facility increasing the loan amount to $5.9 million to fund equipment purchased. The Company paid interest on the unpaid principal at the financial institution's prime reference rate plus 3.10%, which equaled 6.35%. Under the terms of the Equipment Financing Facility, the loan would mature on May 31, 2017. Under the terms of the Equipment Financing Facility, the Company would be required to make 30 payments of principal and interest through the maturity of the loan in May 2017. In September 2015, the Company paid off the remaining principal balance of the equipment financing facility. The Company made a payment of $4.1 million, comprising of principal, interest and administrative fees settling all of its obligations under the loan.

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- Definition The entire disclosure for long-term debt. + 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 + Details
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