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Debt | 12 Months Ended
--- | ---
Dec. 29, 2017
Debt Disclosure [Abstract] |
Debt | DEBT The amortized carrying amount of our debt was as follows (in thousands):
| December 31,
| 2017 |  | 2016
Convertible notes | $ | — |  |  | $ | 109,122 |
Term loan payable | — |  |  | 80,000 |
Total debt | $ | — |  |  | $ | 189,122 |
The balance of unamortized fees and costs was $0.4 million as of December 31, 2016, which was recorded as a reduction of the carrying amount of the Convertible notes on the accompanying Consolidated Balance Sheet. Convertible notes Secured Convertible Notes due 2018 (“Deerfield Notes”) On June 28, 2017, we repaid all amounts outstanding under the Deerfield Notes. The repayment amount totaled $123.8 million which comprised $113.9 million in principal, including $13.9 million of interest paid in kind paid through the repayment date, a $5.8 million prepayment penalty associated with the early repayment of the notes and $4.2 million in accrued and unpaid interest. As a result of the early repayment, there was a $6.2 million loss on the extinguishment of the debt which comprised the prepayment penalty and the unamortized fees and costs on the date of the repayment. Prior to our early repayment of the Deerfield Notes, the outstanding principal amount of the notes bore interest at the rate of 7.5% per annum to be paid in cash, quarterly in arrears, and 7.5% per annum to be paid in kind, quarterly in arrears, for a total interest rate of 15% per annum. 4.25% Convertible Senior Subordinated Notes due 2019 (“2019 Notes”) Between August and November 2016, all $287.5 million aggregate principal amount outstanding under the 2019 Notes was either converted into 54,009,279 shares of common stock or redeemed for $0.6 million in cash. In addition, certain holders received inducements of $6.0 million which included an aggregate cash payment of $2.4 million and $3.6 million in accrued interest payments which would have been payable if the notes had not been exchanged. Under the terms of the indenture for the 2019 Notes, certain holders who exchanged their notes on August 9, 2016 would have been required to repay the interest payment they received as holders of record on August 1. The exchange transactions were structured such that the holders were not required to repay this interest. We have included those payments as an additional inducement and as financing activities on the accompanying Consolidated Statement of Cash Flows. A summary of loss on extinguishment of debt for the conversion and redemption of the 2019 Notes was as follows (in thousands):
| Year Ended December 31, 2016
Cash inducements | $ | 2,394 |
Waiver of requirement to repay interest, described above | 3,572 |
Difference between the total settlement consideration attributed to the liability component of the 2019 Notes and the net carrying value of the liability | 7,338 |
Unamortized discount on redeemed notes | 83 |
Third-party costs | 514 |
Loss on extinguishment of debt | $ | 13,901 |
The stock issuance on the conversion of the notes resulted in an increase to common stock and additional paid-in capital of $592.7 million. A portion of the settlement consideration transferred to the holders of the notes was allocated to the reacquisition of the conversion option embedded in the notes, which resulted in a $342.7 million reduction of additional paid-in capital. Prior to the extinguishment of the 2019 Notes, the outstanding principal amount of the notes bore interest at a rate of 4.25% per annum, payable semi-annually in arrears on February 15 and August 15 of each year. Term loan payable On March 29, 2017, we repaid all amounts outstanding under our term loan payable to Silicon Valley Bank. The repayment included $80.0 million in principal plus $0.1 million in accrued and unpaid interest. There was no gain or loss on the extinguishment of debt as a result of the repayment of the term loan. Prior to our early repayment of the term loan payable, the outstanding principal amount of the loan bore interest at the rate of 1.0% per annum, which was due and payable monthly. As of December 31, 2016, we were required to maintain compensating balances of $81.6 million in connection with our term loan payable to Silicon Valley Bank, which was included in short-term investments on the accompanying Consolidated Balance Sheet; as a result of our repayment of the term loan, the compensating balance requirement was terminated in March 2017.

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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 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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