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Stock Compensation Plans (Details 4) - $ / shares
12 Months Ended
Dec. 26, 2015
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options Outstanding, Number of Shares 187,625 344,375 639,950 692,875
Options Exercisable, Number of Shares 133,250 158,875 198,825  
Range Of Exercise Prices 5.28-5.66 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options Outstanding, Number of Shares 75,500      
Options Outstanding, Weighted-Average Remaining Contractual Life 1 year 2 months 12 days      
Options Outstanding, Weighted-Average Exercise Price $ 5.30      
Options Exercisable, Number of Shares 52,125      
Options Exercisable, Weighted-Average Exercise Price $ 5.30      
Range Of Exercise Prices 5.85-6.06 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options Outstanding, Number of Shares 66,750      
Options Outstanding, Weighted-Average Remaining Contractual Life 2 years 2 months 12 days      
Options Outstanding, Weighted-Average Exercise Price $ 5.87      
Options Exercisable, Number of Shares 35,750      
Options Exercisable, Weighted-Average Exercise Price $ 5.89      
Range Of Exercise Prices 6.07 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options Outstanding, Number of Shares 30,375      
Options Outstanding, Weighted-Average Remaining Contractual Life 2 months 12 days      
Options Outstanding, Weighted-Average Exercise Price $ 6.07      
Options Exercisable, Number of Shares 30,375      
Options Exercisable, Weighted-Average Exercise Price $ 6.07      
Range Of Exercise Prices 11.86 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options Outstanding, Number of Shares 15,000      
Options Outstanding, Weighted-Average Remaining Contractual Life 3 years 2 months 12 days      
Options Outstanding, Weighted-Average Exercise Price $ 11.86      
Options Exercisable, Number of Shares 15,000      
Options Exercisable, Weighted-Average Exercise Price $ 11.86