Nature of Operations and Significant Accounting Policies - New Accounting Pronouncements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Concentration Risk	66.00%	61.00%	45.00%
Accumulated deficit	$ (477,862)	$ (406,945)
Sell-Through Distributors Concentration Risk | Revenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Concentration Risk	66.00%	61.00%	45.00%
Minimum | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated deficit	$ 20,000
Maximum | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated deficit	$ 30,000