Subsequent event	3 Months Ended
Mar. 27, 2016
Subsequent Events [Abstract]
Subsequent event	Subsequent event On April 4, 2016, pursuant to separate, privately negotiated agreements between the Company and certain of the holders of the Convertible Notes (the "Holders"), the Company paid cash and common stock (the "Exchange Consideration") to the Holders in exchange for $219.2 million aggregate principal amount of the Convertible Notes (the "Exchange Transactions"). The Exchange Consideration paid to the Holders per $1,000 principal amount of Convertible Notes is equal to: (i) $1,000 in cash, (ii) a number of shares of the Company’s common stock equal to the amount of the conversion value of the Convertible Notes in excess of the $1,000 principal amount (the "Conversion Shares") calculated on the basis of the average daily volume weighted average price (the "Average Daily VWAP") per share of Company common stock over a specified period , (iii) an inducement payment in additional shares of common stock (the "Inducement Shares"), calculated based on the Average Daily VWAP and (iv) cash in an amount equal to accrued and unpaid interest to, but not including, the closing date. As a result of the Exchange Transactions, the Company paid the Holders aggregate cash consideration of $220.7 million (which includes $1.5 million in accrued but previously unpaid interest) and issued and delivered to the Holders 2.17 million shares of Company common stock (including both Conversion Shares and Inducement Shares).The Company funded the $220.7 million cash payment constituting part of the Exchange Consideration through borrowings under its revolving credit agreement. Following the Exchange Transactions, and after giving effect to the conversion notices the Company has received, but not yet settled, through March 27, 2016 with respect to $44.3 million in aggregate principal amount of the Convertible Notes, $136.2 million aggregate principal amount of the Convertible Notes were outstanding. The issuance of the shares of the Company’s common stock to the Holders pursuant to the Exchange Transactions was made pursuant to the exemption from the registration requirements of the Securities Act of 1933, as amended (the "Securities Act"), under Section 3(a)(9) of the Securities Act. As of March 27, 2016, the Company reclassified $12.9 million from additional paid-in capital to convertible notes in the mezzanine equity section of the Company's condensed consolidated balance sheet. The reclassified amount represents the aggregate difference between the principal amount and the carrying value of both the Convertible Notes purchased by the Company pursuant to the Exchange Transactions and the Convertible Notes for which conversion notices have been received by the Company but have not yet been settled. In addition, as a result of the Exchange Transactions, the Company recognized a loss on extinguishment of debt of $16.3 million in April 2016. In connection with entering into the Exchange Transactions, the Company also entered into bond hedge unwind agreements (the "Hedge Unwind Agreements") with the counterparties to the convertible note hedge transactions related to the Convertible Notes. Under the Hedge Unwind Agreements, the number of call options subject to the Convertible Note hedge transactions was reduced to reflect proportionately the reduction in the outstanding principal amount of the Convertible Notes following the Exchange Transactions. In addition, the Company entered into warrant unwind agreements (the “Warrant Unwind Agreements”) with the dealer counterparties to reduce the number of warrants initially issued to the dealer counterparties, also in connection with the initial issuance of the Convertible Notes. On a net basis, after giving effect to the Hedge Unwind Agreements and Warrant Unwind Agreements, the Company received 0.3 million shares of Company common stock from such dealer counterparties.

Subsequent event

On April 4, 2016, pursuant to separate, privately negotiated agreements between the Company and certain of the holders of the Convertible Notes (the "Holders"), the Company paid cash and common stock (the "Exchange Consideration") to the Holders in exchange for $219.2 million aggregate principal amount of the Convertible Notes (the "Exchange Transactions"). The Exchange Consideration paid to the Holders per $1,000 principal amount of Convertible Notes is equal to: (i) $1,000 in cash, (ii) a number of shares of the Company’s common stock equal to the amount of the conversion value of the Convertible Notes in excess of the $1,000 principal amount (the "Conversion Shares") calculated on the basis of the average daily volume weighted average price (the "Average Daily VWAP") per share of Company common stock over a specified period , (iii) an inducement payment in additional shares of common stock (the "Inducement Shares"), calculated based on the Average Daily VWAP and (iv) cash in an amount equal to accrued and unpaid interest to, but not including, the closing date. As a result of the Exchange Transactions, the Company paid the Holders aggregate cash consideration of $220.7 million (which includes $1.5 million in accrued but previously unpaid interest) and issued and delivered to the Holders 2.17 million shares of Company common stock (including both Conversion Shares and Inducement Shares).The Company funded the $220.7 million cash payment constituting part of the Exchange Consideration through borrowings under its revolving credit agreement. Following the Exchange Transactions, and after giving effect to the conversion notices the Company has received, but not yet settled, through March 27, 2016 with respect to $44.3 million in aggregate principal amount of the Convertible Notes, $136.2 million aggregate principal amount of the Convertible Notes were outstanding. The issuance of the shares of the Company’s common stock to the Holders pursuant to the Exchange Transactions was made pursuant to the exemption from the registration requirements of the Securities Act of 1933, as amended (the "Securities Act"), under Section 3(a)(9) of the Securities Act.

As of March 27, 2016, the Company reclassified $12.9 million from additional paid-in capital to convertible notes in the mezzanine equity section of the Company's condensed consolidated balance sheet. The reclassified amount represents the aggregate difference between the principal amount and the carrying value of both the Convertible Notes purchased by the Company pursuant to the Exchange Transactions and the Convertible Notes for which conversion notices have been received by the Company but have not yet been settled. In addition, as a result of the Exchange Transactions, the Company recognized a loss on extinguishment of debt of $16.3 million in April 2016.

In connection with entering into the Exchange Transactions, the Company also entered into bond hedge unwind agreements (the "Hedge Unwind Agreements") with the counterparties to the convertible note hedge transactions related to the Convertible Notes. Under the Hedge Unwind Agreements, the number of call options subject to the Convertible Note hedge transactions was reduced to reflect proportionately the reduction in the outstanding principal amount of the Convertible Notes following the Exchange Transactions. In addition, the Company entered into warrant unwind agreements (the “Warrant Unwind Agreements”) with the dealer counterparties to reduce the number of warrants initially issued to the dealer counterparties, also in connection with the initial issuance of the Convertible Notes. On a net basis, after giving effect to the Hedge Unwind Agreements and Warrant Unwind Agreements, the Company received 0.3 million shares of Company common stock from such dealer counterparties.