Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Narrative)(Details)

v3.3.1.900
Stock-Based Compensation (Narrative)(Details) - USD ($)
12 Months Ended
Dec. 27, 2015
Dec. 28, 2014
Dec. 29, 2013
Stock-based compensation $ 1,718,000 $ 1,054,000 $ 531,000
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount $ 114,000 224,000  
ShareBasedCompensationArrangementByShareBasedPaymentAwardEstimatedFairValueOfCommonStockPerShare $ 31.14    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 600,000 1,900,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value 600,000 $ 600,000 $ 300,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 11.12 $ 11.05
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized 800,000    
Employee Service Share Based Compensation Costs Recognized in Event of Change of Control 43,000    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options $ 3,800,000    
2012 Omnibus Equity Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 902,096    
Employee Stock Option [Member] | 2006 Equity Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 20.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 5 years    
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years    
Employee Stock Option [Member] | 2012 Omnibus Equity Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 20.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 5 years    
Restricted Stock Units (RSUs) [Member] | 2012 Omnibus Equity Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 25.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 4 years