Employee Benefit Plans (Details) - USD ($)		12 Months Ended
	Jan. 04, 2017	Jan. 03, 2017	Dec. 29, 2015	Dec. 30, 2014
Multiemployer Plans [Line Items]
Required employee age		21 years
Contributions by employer		$ 0	$ 0	$ 0
Weighted-average fair value per share at date of grant		$ 2.85	$ 5.04	$ 10.52
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	80,312	26,088
Reserved for future issuance		669,688
Risk free interest rate		0.12%
Expected life		3 months
Expected volatility rate		31.70%
Expected dividend rate		0.00%
Weighted-average fair value per share at date of grant		$ 1.02
Employee stock purchase plan, compensation expense		$ 31,795
Other Noncurrent Liabilities [Member]
Multiemployer Plans [Line Items]
Deferred compensation plan liability		1,500,000	$ 1,600,000
Other Assets [Member]
Multiemployer Plans [Line Items]
Deferred compensation plan asset		$ 1,600,000	$ 1,500,000