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Stock-based Compensation Expense Textual (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 25, 2020
Sep. 27, 2019
Sep. 25, 2020
Sep. 27, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 100 $ 2,500 $ 4,100 $ 8,700
Unearned Compensation $ 9,000   $ 9,000  
Stock Appreciation Rights (SARs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares granted in period     64,636  
Weighted average exercise price on SARs granted in period     $ 50.95  
Grant date fair value per unit (in usd per share)     13.67  
Performance Shares        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Grant date fair value per unit (in usd per share)     $ 57.65  
Vesting period     3 years  
Stock Compensation Plan | Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares granted in period     66,663  
Grant date fair value per unit (in usd per share)     $ 49.72  
Vesting period     3 years  
Director Equity Plan [Domain] | Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares granted in period     15,976  
Grant date fair value per unit (in usd per share)     $ 48.42  
Vesting period     1 year