Acquisitions - Z-Wave (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Apr. 18, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Purchase price allocation
Weighted-Average Amortization Period (Years)		8 years	8 years
Goodwill		$ 398,402	$ 397,344	$ 288,227
Pro forma financial information
Revenues		882,109	824,009
Net income		$ 87,874	$ 27,958
Earnings per share, Basic		$ 2.04	$ 0.66
Earnings per share, Diluted		$ 2.00	$ 0.65
Customer relationships
Purchase price allocation
Weighted-Average Amortization Period (Years)		6 years	6 years
Trademarks
Purchase price allocation
Weighted-Average Amortization Period (Years)		7 years	7 years
Z-Wave
Acquisitions
Cash consideration	$ 243,000
Purchase price allocation
Intangible assets	125,675
Cash and cash equivalents	2,841
Accounts receivable	5,311
Inventory	15,581
Other current assets	329
Goodwill	109,117
Other non-current assets	2,587
Accounts payable	(3,306)
Other current liabilities	(8,918)
Other non-current liabilities	(6,648)
Total purchase price	242,569
Z-Wave | Developed technology
Purchase price allocation
Intangible assets	$ 69,875
Weighted-Average Amortization Period (Years)	7 years
Z-Wave | Customer relationships
Purchase price allocation
Intangible assets	$ 25,000
Weighted-Average Amortization Period (Years)	4 years
Z-Wave | Trademarks
Purchase price allocation
Intangible assets	$ 9,900
Weighted-Average Amortization Period (Years)	7 years
Z-Wave | In-process research and development
Purchase price allocation
Intangible assets	$ 20,900