Employee Benefit Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Jan. 01, 2013	Jan. 03, 2012
Multiemployer Plans [Line Items]
Required employee service term	6 months
Required employee age	21 years
Vesting percentage	100.00%
Weighted-average fair value per share at date of grant	$ 6.04	$ 2.84	$ 1.89
Employee Stock Purchase Plan [Member]
Multiemployer Plans [Line Items]
Maximum employee salary percentage	15.00%
Offering date percentage	85.00%
Purchase date percentage	85.00%
Number of shares authorized	750,000
Shares issued	18,356
Reserved for future issuance	731,644
Risk free interest rate	0.00%
Expected life	3 months
Expected volatility rate	14.30%
Expected dividend rate	0.00%
Weighted-average fair value per share at date of grant	$ 3.55
Employee stock purchase plan, compensation expense	$ 65,000
Other Noncurrent Liabilities [Member]
Multiemployer Plans [Line Items]
Deferred compensation plan	599,000
Other Assets [Member]
Multiemployer Plans [Line Items]
Deferred compensation plan	$ 581,000