The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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The price per share of the conversion feature embedded in the debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Debt and Revolving Facility - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands	9 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Dec. 26, 2020	Jun. 07, 2019	Sep. 30, 2016
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt	$ 7,000,000	$ 38,000,000
Total debt (principal amount)	$ 313,000,000		$ 338,000,000
2.125% Convertible Senior Notes due 2026 \| Convertible Debt
Debt Instrument [Line Items]
Stated interest rate	2.125%				2.125%
Principal amount of notes converted	$ 25,000,000
Issuance of common stock to settle convertible debt (in shares)	3,000
Conversion price (in usd per share)					$ 8.00
Total debt (principal amount)	$ 1,000,000		26,000,000
7.50% Senior Notes due 2022 \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate	7.50%
Total debt (principal amount)	$ 312,000,000		$ 312,000,000
Revolving Credit Facility [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 500,000,000
Letters of credit outstanding, amount	$ 14,000,000
Revolving Credit Facility [Member] \| Swingline Subfacility
Debt Instrument [Line Items]
Maximum borrowing capacity				50,000,000
Revolving Credit Facility [Member] \| Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 75,000,000