Subsequent Events	3 Months Ended
Subsequent Events	Mar. 29, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Convertible Notes - On May 8, 2020, the Company completed a $200.0 million principal amount private offering of 5.00% convertible senior notes due 2025 and on May 12, 2020, issued an additional $30.0 million principal amount in connection with the overallotment option granted to the initial purchasers as part of the offering (collectively, the “2025 Notes”). The 2025 Notes are governed by the terms of an indenture between the Company and Wells Fargo Bank, National Association, as the Trustee. The 2025 Notes will mature on May 1, 2025, unless earlier converted, redeemed or purchased by the Company. The 2025 Notes bear cash interest at an annual rate of 5.00%, payable semi-annually in arrears on May 1 and November 1 of each year, beginning on November 1, 2020. The 2025 Notes are unsecured obligations and do not contain any financial covenants or restrictions on incurring additional indebtedness, paying dividends or issuing or repurchasing any securities. Events of default under the indenture for the 2025 Notes include, among other things, a default in the payment when due of the principal of, or the redemption price for, any note and a default for 30 days in the payment when due of interest on any note. If an event of default, the principal amount of, and all accrued and unpaid interest on, all of the notes then outstanding will immediately become due and payable. The initial conversion rate applicable to the 2025 Notes is 84.122 shares of common stock per $1,000 principal amount of 2025 Notes, or a total of approximately 19.348 million shares for the total $230.0 million principal amount. This initial conversion rate is equivalent to an initial conversion price of approximately $11.89 per share. The conversion rate will be subject to adjustment upon the occurrence of certain specified events. Noteholders may convert their notes at their option only in the circumstances described in the indenture. The Company will settle conversions by paying or delivering, as applicable, cash, shares of its common stock or a combination of cash and shares of its common stock, at the Company’s election, based on the applicable conversion rate. Net proceeds from this offering were approximately $221.4 million, after deducting the initial purchaser’s discounts and commissions and the Company’s offering expenses. The Company intends to use the net proceeds of this offering for general corporate purposes. Upon issuance, the principal amount is separated into a liability and an equity component, such that interest expense reflects the Company’s nonconvertible debt interest rate. Debt issuance costs related to the 2025 Notes were comprised of discounts upon original issuance of $6.9 million and estimated third party offering costs of $1.7 million. In accounting for the debt issuance costs related to the issuance of the 2025 Notes, the Company allocated the total amount incurred to the liability and equity components based on their relative values. Debt issuance costs attributable to the liability component are amortized to interest expense using the effective interest method over the expected life of the 2025 Notes, and debt issuance costs attributable to the equity component are netted with the equity component in stockholders’ equity. Discounts and third party offering costs attributable to the liability component are recorded as a contra-liability and are presented net against the convertible senior notes due 2025 balance on the consolidated balance sheets. Convertible Note Hedge and Warrant Transactions - In connection with the offering of the 2025 Notes, the Company entered into convertible note hedge transactions (the “Convertible Note Hedge Transactions”) with certain of the initial purchasers of the 2025 Notes and/or their respective affiliates and other financial institutions (in this capacity, the “Hedge Counterparties”). Concurrently with the Company’s entry into the Convertible Note Hedge Transactions, the Company also entered into separate, warrant transactions with the Hedge Counterparties collectively relating to the same number of shares of the Company’s common stock, subject to customary anti-dilution adjustments, and for which the Company received premiums that partially offset the cost of entering into the Convertible Note Hedge Transactions (the “Warrant Transactions”). The Convertible Note Hedge Transactions cover, subject to customary anti-dilution adjustments, the number of shares of the Company’s common stock that will initially underlie the 2025 Notes, and are expected generally to reduce the potential equity dilution, and/or offset any cash payments in excess of the principal amount due, as the case may be, upon conversion of the 2025 Notes. The Warrant Transactions could have a dilutive effect on the Company’s common stock to the extent that the price of its common stock exceeds the strike price of the Warrant Transactions. The strike price will initially be $16.64 per share and is subject to certain adjustments under the terms of the Warrant Transactions. The portion of the net proceeds to the Company from the offering of the 2025 Notes that was used to pay the premium on the Convertible Note Hedge Transactions (calculated after taking into account the proceeds to the Company from the Warrant Transactions) was approximately $19.6 million. The net costs incurred in connection with the Convertible Note Hedge Transactions and Warrant Transactions will be recorded as a reduction to additional paid-in capital on the Company’s Consolidated Balance Sheet during the thirteen weeks ended June 28, 2020. As of the date of this filing, the Company’s accounting for the 2025 Notes, Convertible Note Hedge Transactions and Warrant Transactions was still ongoing. Any impact will be reflected in the Company’s consolidated financial statements during the thirteen weeks ended June 28, 2020.