Acquisition - Textual (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Nov. 15, 2018	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Acquire paid in cash, net		$ 37,163
Net sales		324,523	$ 258,621	$ 221,129
Operating loss		$ (66,487)	(42,806)	$ (29,095)
Maximum [Member]
Business Acquisition [Line Items]
Estimated useful life		15 years
Minimum [Member]
Business Acquisition [Line Items]
Estimated useful life		2 years
Developed technology [Member] | Maximum [Member]
Business Acquisition [Line Items]
Estimated useful life		10 years
Developed technology [Member] | Minimum [Member]
Business Acquisition [Line Items]
Estimated useful life		9 years
Customer relationships [Member]
Business Acquisition [Line Items]
Estimated useful life		9 years
Backlog [Member] | Maximum [Member]
Business Acquisition [Line Items]
Estimated useful life		1 year
Trade name [Member]
Business Acquisition [Line Items]
Estimated useful life		15 years
4D Technology [Member]
Business Acquisition [Line Items]
Account receivable not expected to be collected		$ 161
Finite-lived intangible assets		$ 22,100
Weighted average estimated useful life		9 years 3 months
Net sales		$ 2,100
Operating loss		400
Pro forma net revenue		338,919	271,966
Pro forma net income		57,672	29,302
Business acquisition, related costs		900
4D Technology [Member] | Material Nonrecurring Adjustments [Member]
Business Acquisition [Line Items]
Pro forma net revenue		3,500	3,500
Pro forma net income		$ 1,700	$ 1,700
4D Technology [Member] | Developed technology [Member]
Business Acquisition [Line Items]
Estimated useful life		9 years
4D Technology [Member] | Customer relationships [Member]
Business Acquisition [Line Items]
Estimated useful life		9 years
4D Technology [Member] | Backlog [Member] | Maximum [Member]
Business Acquisition [Line Items]
Estimated useful life		1 year
4D Technology [Member] | Trade name [Member]
Business Acquisition [Line Items]
Estimated useful life		15 years
4D Technology [Member] | Stock Purchase Agreement [Member]
Business Acquisition [Line Items]
Acquire paid in cash	$ 38,700
Acquire paid in cash, net	$ 37,200
4D Technology [Member] | Stock Purchase Agreement [Member] | Common Stock [Member]
Business Acquisition [Line Items]
Acquire share	125,117
Acquire share price	$ 0.001
Acquire share value	$ 4,000