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Income Taxes (Schedule of components of income tax expense) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 01, 2022
Jan. 02, 2021
Dec. 28, 2019
Income Tax Disclosure [Abstract]      
Loss from continuing operations $ (7,510) $ (50,042) $ (16,181)
Canadian statutory rate 26.50% 26.50% 26.50%
Income tax recovery at statutory rate $ (1,990) $ (13,261) $ (4,288)
Stock-based compensation 2,166 3,169 1,975
Change in valuation allowance 975 560 (113)
Disallowed executive compensation 138 2,801 0
Foreign tax rate differential (31) (105) 126
Change in enacted tax rates (442) 250 (549)
CARES Act 0 2,472 0
Other (4,182) 1,374 (252)
Income tax benefit $ (3,366) $ (2,740) $ (3,101)