Income Taxes (Schedule of components of income tax expense (benefit)) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Oct. 01, 2022	Jul. 02, 2022	Apr. 02, 2022	Jan. 01, 2022	Oct. 02, 2021	Jul. 03, 2021	Apr. 03, 2021	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Income Tax Disclosure [Line Items]
Current income tax expense (benefit)									$ 2,467	$ (443)	$ (13,713)
Deferred income tax expense (benefit)									(4,807)	(5,985)	6,063
Income tax expense (benefit)	$ 1,285	$ (4,964)	$ 1,152	$ 187	$ 342	$ 2,804	$ (10,100)	$ 526	(2,340)	(6,428)	(7,650)
Canada [Member]
Income Tax Disclosure [Line Items]
Current income tax expense (benefit)									84	(9)	(154)
Deferred income tax expense (benefit)									0	299	(291)
U.S. [Member]
Income Tax Disclosure [Line Items]
Current income tax expense (benefit)									(55)	(75)	(14,148)
Deferred income tax expense (benefit)									(4,672)	(6,129)	5,532
Other [Member]
Income Tax Disclosure [Line Items]
Current income tax expense (benefit)									2,438	(359)	589
Deferred income tax expense (benefit)									$ (135)	$ (155)	$ 822