Sale of Sunflower Business (Schedule of assets and liabilities held for sale on the consolidated balance sheet) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021	Oct. 11, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax loss on sale	$ (23,227)	$ 0	$ 0
Sunflower Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration	16,000			$ 16,000
Less: debt and working capital adjustments	(6,620)
Less: costs to sell	(1,162)
Net proceeds	8,218
Accounts receivable	10,572
Inventories	13,493
Other current assets	105
Property, plant and equipment	10,328
Operating lease right-of-use assets	1,834
Intangible assets, net	2,512
Accounts payable and accrued liabilities	(4,985)
Operating lease liabilities	(2,414)
Net assets sold	31,445
Pre-tax loss on sale	$ (23,227)