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.

No definition available.

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

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-Publisher FASB
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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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- Definition

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Summary of Significant Accounting Policies - Recent Accounting Standards Not Yet Adopted (Details) - USD ($) $ in Thousands	Sep. 26, 2020	Dec. 29, 2019	Dec. 28, 2019	Dec. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	$ 123,390		$ 130,173
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets				$ 82,300
Recognize lease liabilities				$ 106,800
ASU 2016-13 Financial Instruments-Credit Losses Topic 326 \| Retained Earnings \| Cumulative-effect adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Opening balance of retained earnings at December 28, 2019		$ (200)