Income Taxes (Details) $ in Thousands, kr in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2023 USD ($)	Jul. 02, 2022 USD ($)	Jul. 01, 2023 USD ($)	Jul. 01, 2023 NOK (kr)	Jul. 02, 2022 USD ($)
Income Taxes
Income tax expense (benefit)	$ 12,338	$ 10,994	$ 20,091		$ 22,683
Effective income tax rate (as a percent)	53.00%	33.20%	44.60%	44.60%	33.50%
Gross unrecognized tax benefits which would affect the effective tax rate if recognized	$ 5,100		$ 5,100
Norwegian Tax Administration | 2013 | Under appeal
Income Taxes
Estimate of additional income tax expense			$ 13,100	kr 141.3