Forgivable Loans (Details) $ in Thousands	12 Months Ended
	Jan. 02, 2016 USD ($)	Jan. 03, 2015 USD ($)
Interest rate (as a percent)	0.0325
Forgivable loans activity
Beginning balance	$ 45,356	$ 54,759
Forgivable loans to employees	14,531	5,964
Terminations		(2,158)
Amortization	(15,202)	(13,209)
Ending balance	44,685	45,356
Current portion of forgivable loans	4,402	2,449
Non-current portion of forgivable loans	$ 40,283	$ 42,907
Minimum
Term of forgivable loans or advances	3 years
Maximum
Term of forgivable loans or advances	8 years