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Stock-Based Compensation (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 02, 2021
Dec. 28, 2019
Dec. 29, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted (shares) 0 637,763 788,301
RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (years) 3 years    
Unrecognized compensation cost $ 1.5    
Nonvested stock, weighted average recognition period 10 months 24 days    
PSU      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (years) 3 years    
Unrecognized compensation cost $ 0.8    
Nonvested stock, weighted average recognition period 1 year 1 month 6 days    
Nonvested Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation cost $ 1.2    
Nonvested stock, weighted average recognition period 1 year    
Cliff vesting | RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (years)   3 years  
Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for future issuance (shares) 1,600,000    
Exercised period (years) 10 years    
Plan | Cliff vesting      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (years) 4 years