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Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Mar. 30, 2021	Dec. 29, 2020
Recent Accounting Pronouncements
Retained Earnings (Accumulated Deficit)	$ 1,114,047	$ 1,110,087
Cumulative effect of adopting ASU 2020-06
Recent Accounting Pronouncements
Retained Earnings (Accumulated Deficit)	$ 4,800

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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