Stock-Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended							6 Months Ended
	Jul. 02, 2013	Jul. 03, 2012	Jul. 02, 2013 General and Administrative Expense [Member]	Jul. 03, 2012 General and Administrative Expense [Member]	Jul. 02, 2013 Executive Officer [Member] officer	Jul. 02, 2013 IPO [Member]	May 31, 2013 IPO [Member]	Jul. 02, 2013 IPO [Member] Accelerated Vesting of Outstanding Stock Options [Member]	Jul. 02, 2013 IPO [Member] Stock Options Granted [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Maximum shares reserved for issuance							3,750,500
Options granted	538,273	168,195			403,900
Options exercised	0	0
Weighted average fair value of options granted (USD per share)	$ 5.81	$ 1.21
Number of officers granted awards					2
Vesting percentage						50.00%
Vesting period	4 years
Options forfeited	9,261
Share-based compensation expense	$ 3,900	$ 600	$ 3,600	$ 297				$ 2,000	$ 1,200
Stock-based compensation, capitalized amount	$ 41	$ 36