Significant Accounting Policies (Schedule of consolidated balance sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
ASSETS
Inventories	$ 207,047	$ 219,778
Total current assets	302,357	329,604
Total assets	855,852	754,754
LIABILITIES
Accounts payable and accrued liabilities	108,511	121,155
Net deferred income tax liability	(3,712)	14,051
Total liabilities	508,583	413,281
Accumulated deficit	(155,688)	(147,738)
Total Equity	319,207	313,328	$ 223,401	$ 130,371
Total equity and liabilities	$ 855,852	754,754
As Previously Reported [Member]
ASSETS
Inventories		220,143
Total current assets		329,969
Total assets		755,119
LIABILITIES
Accounts payable and accrued liabilities		121,430
Net deferred income tax liability		22,485
Total liabilities		421,990
Accumulated deficit		(156,082)
Total Equity		304,984
Total equity and liabilities		755,119
Adjustment [Member]
ASSETS
Inventories		(365)
Total current assets		(365)
Total assets		(365)
LIABILITIES
Accounts payable and accrued liabilities		(275)
Net deferred income tax liability		(8,434)
Total liabilities		(8,709)
Accumulated deficit		8,344
Total Equity		8,344
Total equity and liabilities		$ (365)