Acquisition of BAM Labs, Inc. (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016	Sep. 29, 2015
Business Acquisition [Line Items]
Cash paid to acquire remaining capital stock of BAM Labs, Inc.		$ 0	$ 0	$ 70,018
Goodwill		$ 64,000	$ 64,000
BAM Labs, Inc. [Member]
Business Acquisition [Line Items]
Remeasured Fair Value	$ 13,000
Business Combination, Acquisition Related Costs				3,000
Cash paid to acquire remaining capital stock of BAM Labs, Inc.	$ 57,000
Total acquisition price				70,018
Accounts Receivables				105
Prepaid expenses				98
Property and Equipment				91
Deferred income taxes				2,754
Goodwill				55,083
Intangible Assets				13,619
Total Assets Acquired				71,750
Accounts Payable				269
Compensation and benefits				322
Other long-term liabilities				1,141
Total liabilities acquired				1,732
Developed Technologies [Member] | BAM Labs, Inc. [Member]
Business Acquisition [Line Items]
Estimated Useful Life - acquired developed technologies	8 years
Other Noncurrent Assets [Member]
Business Acquisition [Line Items]
Cost Method Investment					$ 6,000
Developed Technologies [Member] | BAM Labs, Inc. [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 14,000
General and Administrative Expense [Member] | BAM Labs, Inc. [Member]
Business Acquisition [Line Items]
Business Combination Step Acquisition Equity Interest in Acquiree Remeasurement Gain, Net of Acquisition Costs and Incremental R&D Expenses				$ 4,000