Stock-Based Compensation (Narrative) (Details) (USD $)	12 Months Ended					12 Months Ended
	Dec. 31, 2013	Jan. 01, 2013	Jan. 03, 2012	Dec. 31, 2013 Employee Stock Purchase Plan [Member]	Mar. 10, 2011 Class B Common Stock [Member]	Dec. 31, 2013 General and Administrative Expense [Member]	Jan. 01, 2013 General and Administrative Expense [Member]	Jan. 03, 2012 General and Administrative Expense [Member]	Dec. 31, 2013 2010 Stock Incentive Plan Post-Merger [Member]	Dec. 31, 2013 Capitalized Internal Costs [Member]	Jan. 01, 2013 Capitalized Internal Costs [Member]	Jan. 03, 2012 Capitalized Internal Costs [Member]	Dec. 31, 2013 Stock Option [Member] IPO [Member]	Jan. 03, 2012 Warrant [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Number of shares authorized				750,000					3,168,705
Stock option term									10 years
Vesting period									4 years
Stock based compensation expense				$ 65,000		$ 4,300,000	$ 1,200,000	$ 1,300,000		$ 71,000	$ 81,000	$ 75,000		$ 100,000
Accelerated vesting													2,000,000
Vesting percentage													50.00%
Shares granted													1,200,000
Number of shares available for grant	3,321,785
Exercises in period, intrinsic value		5,100,000	16,000
Unrecognized compensation cost	$ 2,700,000
Period for recognition	3 years 1 month 10 days
Number of warrants issued					86,550
Exercise price					8.67
Number of securities exercised	28,850