Income Taxes (Schedule of deferred tax assets and liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Income Tax Disclosure [Abstract]
Differences in property, plant and equipment and intangible assets	$ (28,088)	$ (54,761)
Capital and non-capital losses	17,335	26,751
Interest expense limitation	9,464	13,064
Tax benefit of scientific research expenditures	2,866	2,744
Stock-based compensation	2,160	680
Inventory basis differences	1,805	1,148
Right-of-use lease assets	(23,071)	(13,224)
Lease liabilities	23,609	13,346
Other accrued reserves	2,458	1,468
Gross deferred income tax liability	8,538	(8,784)
Less: valuation allowance	4,826	5,267	$ 4,284
Deferred income tax asset (liability)	$ 3,712	$ (14,051)