Segment Information (Schedule of Reportable Segments and Reconciliation of Segment Contribution Income (Loss) to Income (Loss) Before Income Taxes) (Details) - USD ($) $ in Thousands		3 Months Ended
		Apr. 02, 2023	Apr. 03, 2022
Segment Reporting Information [Line Items]
Total net revenue	[1]	$ 180,908	$ 210,558
Total segment contribution income		15,110	11,521
Corporate and unallocated costs		(22,183)	(20,801)
Amortization of intangibles	[2]	(129)	(129)
Stock-based compensation expense		(4,665)	(4,697)
Goodwill impairment		0	(44,442)
Restructuring and other charges		(108)	23
Litigation reserves, net		0	(20)
Other income (expenses), net	[3]	1,406	(982)
Loss before income taxes		(10,569)	(59,527)
Connected Home
Segment Reporting Information [Line Items]
Total net revenue	[1]	102,746	130,342
Total segment contribution income		$ 668	$ (1,975)
Segment contribution margin		0.70%	(1.50%)
SMB
Segment Reporting Information [Line Items]
Total net revenue	[1]	$ 78,162	$ 80,216
Total segment contribution income		$ 14,442	$ 13,496
Segment contribution margin		18.50%	16.80%

[1] No individual foreign country represented more than 10% of the Company's total net revenue in the periods presented.

[2] Amounts exclude amortization expense related to patents within purchased intangibles in cost of revenue.

[3] Amounts included gain/(loss), net from derivatives not designated as hedging instruments of $(0.2) million and $1.2 million, for the three months ended April 2, 2023 and April 3, 2022, respectively.