Acquisition (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 28, 2014	Dec. 30, 2016	Jan. 02, 2015
Business Acquisition [Line Items]
Purchase price, cash			$ 2,877
Bargain purchase gain			3,015
Technolab International Corporation [Member]
Business Acquisition [Line Items]
Purchase price	$ 3,000
Purchase price, common stock	1,000
Contingent consideration	8,000
Bargain purchase gain	3,015
Acquired intangible assets	$ 7,700
Contributed total revenue			10,300
Contribution before depreciation, amortization, interest, corporate overhead allocation and taxes			$ 3,300
Minimum [Member] | Technolab International Corporation [Member]
Business Acquisition [Line Items]
Amortization period		2 years
Maximum [Member] | Technolab International Corporation [Member]
Business Acquisition [Line Items]
Amortization period		5 years