Share-based Compensation (Restricted Stock and PSU (Details) $ / shares in Units, $ in Thousands				12 Months Ended
	Jan. 08, 2016 shares	Nov. 19, 2015 USD ($) $ / shares	Jan. 08, 2015 USD ($) $ / shares	Dec. 29, 2015 USD ($) item $ / shares shares	Dec. 30, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($)
Restricted Stock Units
Restricted Stock Units, Shares
Outstanding at the beginning of the period (in shares) | shares				978,124
Granted (in shares) | shares				769,926
Forfeited (in shares) | shares				(39,388)
Vested (in shares) | shares				(724,076)
Outstanding at the end of period (in shares) | shares				984,586	978,124
Restricted Stock Units, Weighted-Average Grant Date Fair Value
Outstanding at the beginning of the period (in dollars per share) | $ / shares				$ 22.52
Granted (in dollars per share) | $ / shares				35.56
Forfeited (in dollars per share) | $ / shares				27.98
Vested (in dollars per share) | $ / shares				22.04
Outstanding at the end of the period (in dollars per share) | $ / shares				$ 32.86	$ 22.52
Weighted-Average Remaining Contractual Term (years)
Weighted-Average Remaining Contractual Term				1 year 2 months 12 days
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars) | $				$ 35,511
Intrinsic value of awards vested (in dollars) | $				25,100	$ 20,400	$ 21,300
Share-based Compensation, other disclosures
Excess tax benefit realized from tax deductions that vested | $				2,800	$ 1,400	$ 2,100
Unrecognized compensation cost
Unrecognized compensation cost of unvested stock awards (in dollars) | $				$ 18,200
Expected weighted-average period of recognition of unrecognized compensation cost of unvested awards				1 year 2 months 12 days
Restricted Stock Units | Minimum
Share-based compensation
Vesting period				1 year
Restricted Stock Units | Maximum
Share-based compensation
Vesting period				5 years
PSUs
Share-based compensation
Number of executives included in plan | item				2
Vesting period				1 year
Restricted Stock Units, Shares
Vested (in shares) | shares	(144,000)
Restricted Stock Units, Weighted-Average Grant Date Fair Value
Granted (in dollars per share) | $ / shares		$ 34.11	$ 34.77
Share-based Compensation, other disclosures
Grant date fair value | $		$ 3,900	$ 4,000
Unrecognized compensation cost
Unrecognized compensation cost of unvested stock awards (in dollars) | $				$ 3,600
Expected weighted-average period of recognition of unrecognized compensation cost of unvested awards				1 year