Common Stock and Warrants	12 Months Ended
Dec. 29, 2017
Warrants and Rights Note Disclosure [Abstract]
Common Stock and Warrants	COMMON STOCK AND WARRANTS Conversion of Debt into Common Stock Between August and November 2016, we issued 54,009,279 shares of our common stock pursuant to the conversion of $286.9 million of aggregate principal amount of the 2019 Notes. The conversions resulted in a $253.1 million increase to shareholder’s equity and a $13.9 million loss on extinguishment of debt. See “Note 6. Debt” for more information on the conversion of the 2019 Notes. Sale of Shares of Common Stock In July 2015, we completed a registered underwritten public offering of 28,750,000 shares of our common stock, including 3,750,000 shares issued under the underwriters’ 30-day option to buy shares, at a price of $5.40 per share pursuant to a shelf registration statement previously filed with the Securities and Exchange Commission, which was filed and automatically became effective on July 1, 2015. We received $145.6 million in net proceeds from the offering after deducting the underwriting discount and other expenses. 2014 Warrants In connection with an amendment to the note purchase agreement for the Secured Convertible Notes due 2015, (the “Original Deerfield Notes”), in January 2014 we issued two-year warrants to purchase an aggregate of 1,000,000 shares of our common stock at an exercise price of $9.70 per share (the “2014 Warrants”). Subsequent to our March 2015 notification of our election to extend the maturity date of the Deerfield Notes, the exercise price of the 2014 Warrants was reset to $3.445 per share, the term was extended by two years to January 22, 2018, and the 2014 Warrants were transferred to Additional paid-in capital as of that date at their then estimated fair value of $1.5 million as their terms had become fixed. On September 11, 2017, we issued an aggregate of 877,451 shares of common stock pursuant to the cashless exercises of the 2014 Warrants issued to an accredited investor transferee. The number of shares issued upon exercise was net of 122,549 shares withheld to effect the cashless exercise of the 2014 Warrants in accordance with their terms. As of December 31, 2017, there are no remaining warrants outstanding.

COMMON STOCK AND WARRANTS

Conversion of Debt into Common Stock

Between August and November 2016, we issued 54,009,279 shares of our common stock pursuant to the conversion of $286.9 million of aggregate principal amount of the 2019 Notes. The conversions resulted in a $253.1 million increase to shareholder’s equity and a $13.9 million loss on extinguishment of debt. See “Note 6. Debt” for more information on the conversion of the 2019 Notes.

Sale of Shares of Common Stock

In July 2015, we completed a registered underwritten public offering of 28,750,000 shares of our common stock, including 3,750,000 shares issued under the underwriters’ 30-day option to buy shares, at a price of $5.40 per share pursuant to a shelf registration statement previously filed with the Securities and Exchange Commission, which was filed and automatically became effective on July 1, 2015. We received $145.6 million in net proceeds from the offering after deducting the underwriting discount and other expenses.

2014 Warrants

In connection with an amendment to the note purchase agreement for the Secured Convertible Notes due 2015, (the “Original Deerfield Notes”), in January 2014 we issued two-year warrants to purchase an aggregate of 1,000,000 shares of our common stock at an exercise price of $9.70 per share (the “2014 Warrants”). Subsequent to our March 2015 notification of our election to extend the maturity date of the Deerfield Notes, the exercise price of the 2014 Warrants was reset to $3.445 per share, the term was extended by two years to January 22, 2018, and the 2014 Warrants were transferred to Additional paid-in capital as of that date at their then estimated fair value of $1.5 million as their terms had become fixed.

On September 11, 2017, we issued an aggregate of 877,451 shares of common stock pursuant to the cashless exercises of the 2014 Warrants issued to an accredited investor transferee. The number of shares issued upon exercise was net of 122,549 shares withheld to effect the cashless exercise of the 2014 Warrants in accordance with their terms. As of December 31, 2017, there are no remaining warrants outstanding.