Revenues - Schedule of Revenues on Disaggregated Basis (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disaggregation Of Revenue [Line Items]
Revenues	$ 20,555	$ 40,862
Wireless
Disaggregation Of Revenue [Line Items]
Revenues	20,555	40,862
Wireless | License and service fees
Disaggregation Of Revenue [Line Items]
Revenues	3,122	3,216
Wireless | Hosted environment usage fees
Disaggregation Of Revenue [Line Items]
Revenues	2,956	2,833
Wireless | Cloud based usage fees
Disaggregation Of Revenue [Line Items]
Revenues	13,923	33,643
Wireless | Consulting services and other
Disaggregation Of Revenue [Line Items]
Revenues	$ 554	$ 1,170