Income Taxes - Uncertain Tax Positions (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Summary of the activity related to gross unrecognized tax benefits
Beginning balance	$ 2,276	$ 2,036	$ 3,187
Additions based on tax positions related to current year	577	436	630
Additions based on tax positions related to prior years			115
Reductions based on tax positions related to prior years		(196)
Reductions for tax positions as a result of a lapse of the applicable statute of limitations			(1,896)
Ending balance	2,853	2,276	2,036
Unrecognized tax benefits
Gross unrecognized tax benefits, inclusive of interest	3,000	2,400	2,100
Gross unrecognized tax benefits which would affect the effective tax rate if recognized	2,100	1,900	$ 2,100
Norwegian \| 2013
Unrecognized tax benefits
Additional income tax expense	$ 141,300	$ 16,500

Estimated amount of loss resulting from an adverse tax position.

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