Goodwill and Intangible Assets (Details 2) (USD $)	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Acquired identifiable intangible assets
Acquired identifiable intangible assets, net of accumulated amortization	$ 4,757,000	$ 4,537,000
Accumulated amortization	9,584,000	8,392,000
Amortization of intangible assets	1,400,000	1,200,000	800,000
Amortization Expense
2015	1,063,000
2016	899,000
2017	857,000
2018	831,000
2019	563,000
Total	4,213,000
Non-competition agreements
Acquired identifiable intangible assets
Acquired identifiable intangible assets, net of accumulated amortization	236,000	598,000
Accumulated amortization	4,046,000	3,802,000
Customer relationships
Acquired identifiable intangible assets
Acquired identifiable intangible assets, net of accumulated amortization	4,521,000	3,909,000
Accumulated amortization	3,746,000	3,550,000
Other intangible assets
Acquired identifiable intangible assets
Acquired identifiable intangible assets, net of accumulated amortization		30,000
Accumulated amortization	$ 1,792,000	$ 1,040,000