Income Taxes (Details) $ in Thousands, kr in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Oct. 01, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2023 NOK (kr)	Oct. 01, 2022 USD ($)
Income Taxes
Income tax expense (benefit)	$ 3,388	$ 14,188	$ 23,479		$ 36,871
Effective income tax rate (as a percent)	24.70%	40.30%	40.00%	40.00%	35.80%
Gross unrecognized tax benefits which would affect the effective tax rate if recognized	$ 5,200		$ 5,200
Norwegian Tax Administration | 2013 | Under appeal
Income Taxes
Estimate of additional income tax expense			$ 13,200	kr 141.3