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Share-based Compensation, Restricted Stock and PSU (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended 36 Months Ended
Jan. 08, 2018
shares
Dec. 26, 2017
USD ($)
$ / shares
shares
Dec. 27, 2016
USD ($)
$ / shares
shares
Dec. 29, 2015
USD ($)
Dec. 26, 2017
USD ($)
item
$ / shares
shares
PSUs          
Share-based compensation          
Number of executives granted performance stock units | item         2
Number of common shares that a holder would receive upon meeting a performance obligation and vesting requirement (in shares)   1     1
Shares          
Outstanding at the beginning of the period (in shares)   230,000      
Granted (in shares) 115,000 90,000      
Incremental Performance Shares (in shares) 40,576 73,237      
Vested (in shares) (155,576) (188,237)      
Outstanding at the end of period (in shares)   205,000 230,000   205,000
Weighted-Average Grant Date Fair Value          
Outstanding at the beginning of the period (in dollars per share) | $ / shares   $ 37.00      
Granted (in dollars per share) | $ / shares   54.18      
Incremental Performance Shares (in dollars per share) | $ / shares   34.11      
Vested (in dollars per share) | $ / shares   34.11      
Outstanding at the end of the period (in dollars per share) | $ / shares   $ 46.16 $ 37.00   $ 46.16
Weighted-Average Remaining Contractual Term (years)          
Weighted-Average Remaining Contractual Term   1 year      
Aggregate Intrinsic Value          
Outstanding at the end of the period (in dollars) | $   $ 11,086     $ 11,086
Unrecognized compensation cost          
Unrecognized compensation cost of unvested stock awards (in dollars) | $   $ 5,100     $ 5,100
Expected weighted-average period of recognition of unrecognized compensation cost of unvested awards   1 year      
Share-based Compensation, other disclosures          
Target percentage relating to shares granted (as a percent)   100.00%      
Vesting period         1 year
Intrinsic value of awards vested (in dollars) | $   $ 8,600 $ 5,000    
Excess tax benefit recognized within the income tax provision | $   $ 800      
RSUs          
Share-based compensation          
Number of common shares that a holder would receive upon satisfaction of the vesting requirement (in shares)   1     1
Shares          
Outstanding at the beginning of the period (in shares)   919,463      
Granted (in shares)   577,644      
Forfeited (in shares)   (50,401)      
Vested (in shares)   (496,715)      
Outstanding at the end of period (in shares)   949,991 919,463   949,991
Weighted-Average Grant Date Fair Value          
Outstanding at the beginning of the period (in dollars per share) | $ / shares   $ 37.06      
Granted (in dollars per share) | $ / shares   48.76      
Forfeited (in dollars per share) | $ / shares   38.09      
Vested (in dollars per share) | $ / shares   38.01      
Outstanding at the end of the period (in dollars per share) | $ / shares   $ 43.62 $ 37.06   $ 43.62
Weighted-Average Remaining Contractual Term (years)          
Weighted-Average Remaining Contractual Term   1 year 4 months 24 days      
Aggregate Intrinsic Value          
Outstanding at the end of the period (in dollars) | $   $ 51,402     $ 51,402
Unrecognized compensation cost          
Unrecognized compensation cost of unvested stock awards (in dollars) | $   $ 23,200     $ 23,200
Expected weighted-average period of recognition of unrecognized compensation cost of unvested awards   1 year 4 months 24 days      
Share-based Compensation, other disclosures          
Intrinsic value of awards vested (in dollars) | $   $ 23,400 $ 21,500 $ 25,100  
Excess tax benefit recognized within the income tax provision | $   $ 1,600      
Excess tax benefit recorded in additional paid-in capital | $     $ 1,500 $ 2,800  
RSUs | Minimum          
Share-based Compensation, other disclosures          
Vesting period   1 year      
RSUs | Maximum          
Share-based Compensation, other disclosures          
Vesting period   5 years