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Stock Based Compensation (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2018
USD ($)
Plan
$ / shares
shares
Apr. 01, 2017
USD ($)
$ / shares
shares
Dec. 30, 2017
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of plans that have shares reserved for further issuance | Plan 1    
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of fair market value of stock on grant date for exercise price 100.00%    
Stock Appreciation Rights (SARs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense | $ $ 56,000 $ 7,000  
Number of Units [Roll Forward]      
Outstanding at beginning of period (in shares) | shares 141,500 0 0
Issued (in shares) | shares 51,000   149,500
Forfeited (in shares) | shares (2,000)   (8,000)
Outstanding at end of period (in shares) | shares 190,500   141,500
Weighted - Average Exercise Price [Roll Forward]      
Outstanding at beginning of period (in dollars per share) $ 20.36 $ 0 $ 0
Issued (in dollars per share) 24.90   20.39
Forfeited (in dollars per share) 19.10   21.10
Outstanding at end of period (in dollars per share) 21.44   $ 20.36
SARs Grants Outstanding and Exercisable [Abstract]      
Minimum Range of Exercise Prices (in dollars per share) 19.10    
Maximum Range of Exercise Prices (in dollars per share) $ 24.90    
Outstanding (in shares) | shares 190,500    
Weighted- Average Remaining Contractual Life 4 years 2 months 12 days    
Weighted- Average Exercise Price (in dollars per share) $ 21.44    
Exercisable (in shares) | shares 20,670    
Exercisable, Weighted- Average Remaining Contractual life 4 years    
Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 19.10    
Stock Options [Member]      
Number of Units [Roll Forward]      
Outstanding at beginning of period (in shares) | shares 25,000 0 0
Issued (in shares) | shares 0 0 25,000
Forfeited (in shares) | shares 0   0
Outstanding at end of period (in shares) | shares 25,000   25,000
Weighted - Average Exercise Price [Roll Forward]      
Outstanding at beginning of period (in dollars per share) $ 0 $ 0 $ 0
Issued (in dollars per share) 0   0
Forfeited (in dollars per share) 0   0
Outstanding at end of period (in dollars per share) 0   $ 0
SARs Grants Outstanding and Exercisable [Abstract]      
Maximum Range of Exercise Prices (in dollars per share) $ 0    
Outstanding (in shares) | shares 25,000    
Weighted- Average Remaining Contractual Life 4 years    
Weighted- Average Exercise Price (in dollars per share) $ 0    
Exercisable (in shares) | shares 0    
Exercisable, Weighted- Average Remaining Contractual life 0 years    
Exercisable, Weighted- Average Exercise Price (in dollars per share) $ 0    
Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock granted (in shares) | shares 0 0  
Stock Options and SARs [Member]      
SARs Grants Outstanding and Exercisable [Abstract]      
Outstanding options, intrinsic value | $ $ 2,040,450    
2010 Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for future grant (in shares) | shares 275,000