Segment, Customer Concentration and Geographical Information - Wireless Revenues by Product (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue from External Customer [Line Items]
Total revenues	$ 5,140	$ 10,338	$ 10,938	$ 21,268
Wireless
Revenue from External Customer [Line Items]
Total revenues	5,140	10,338	10,938	21,268
Wireless | Family Safety
Revenue from External Customer [Line Items]
Total revenues	4,221	8,748	8,685	17,838
Wireless | CommSuite
Revenue from External Customer [Line Items]
Total revenues	531	735	1,196	1,560
Wireless | ViewSpot
Revenue from External Customer [Line Items]
Total revenues	$ 388	$ 855	$ 1,057	$ 1,870