Balance Sheet Components (Schedule of Goodwill) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Apr. 03, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill, beginning balance	$ 80,721,000	$ 80,721,000	$ 80,721,000
Goodwill impairment charge		(44,442,000)	0	$ 0
Goodwill, ending balance		36,279,000	80,721,000	80,721,000
Connected Home
Goodwill [Line Items]
Goodwill, beginning balance	44,442,000	44,442,000	44,442,000
Goodwill impairment charge	(44,400,000)	(44,442,000)	0	0
Goodwill, ending balance	0	0	44,442,000	44,442,000
SMB
Goodwill [Line Items]
Goodwill, beginning balance	36,279,000	36,279,000	36,279,000
Goodwill impairment charge	$ 0	0	0	0
Goodwill, ending balance		$ 36,279,000	$ 36,279,000	$ 36,279,000