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Revenue - Narrative (Details) - USD ($)
12 Months Ended
Jan. 01, 2022
Jan. 02, 2021
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
Material contract assets $ 0  
Deferred contract costs 0  
Contract liabilities $ 4,900,000 $ 9,900,000
Online Dashboard, Mobile Applications, and Upgrade Rights    
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
Estimated usage period 2 years  
Wearable Technology    
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
Contract liabilities $ 3,000,000 4,600,000
Gift Cards    
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
Contract liabilities $ 3,600,000 $ 4,200,000