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Equity (Narrative) (Details)
3 Months Ended
Sep. 27, 2019
USD ($)
plan
Dec. 28, 2018
shares
Sep. 28, 2018
shares
May 31, 2018
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of stock incentive plans | plan 2      
Stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Nonvested awards, unrecognized compensation expense $ 1,500,000      
Nonvested awards, expense expected to be recognized, weighted average period 2 years 7 months 6 days      
Stock awards and units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Nonvested awards, unrecognized compensation expense $ 2,100,000      
Nonvested awards, expense expected to be recognized, weighted average period 2 years 4 months 24 days      
2018 Incentive Plan | Restricted stock units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock issued under stock incentive plan (in shares) | shares   63,030    
2018 Incentive Plan | Performance Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock issued under stock incentive plan (in shares) | shares     51,706  
2018 Incentive Plan | Stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock issued under stock incentive plan (in shares) | shares     126,118  
Share Repurchase Program        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Authorized repurchase amount       $ 7,500,000
Remaining value available under stock repurchase program $ 4,400,000