Revenue, Deferred Revenue And Prepaid Commissions - Additional Information and Disaggregation of Revenue (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) revenue_component	Jun. 30, 2022 USD ($)
Revenues from External Customers and Long-Lived Assets
Total revenue	$ 36,463	$ 33,710	$ 69,643	$ 67,535
Deferred revenue recognized from previous period			18,100
United States
Revenues from External Customers and Long-Lived Assets
Total revenue	35,649	32,553	67,860	65,325
International
Revenues from External Customers and Long-Lived Assets
Total revenue	814	1,157	$ 1,783	2,210
Wireless revenue
Revenues from External Customers and Long-Lived Assets
Revenue primary component | revenue_component			2
Total revenue	18,877	18,700	$ 37,905	37,547
Paging revenue
Revenues from External Customers and Long-Lived Assets
Total revenue	18,271	18,141	36,796	36,454
Product and other revenue
Revenues from External Customers and Long-Lived Assets
Total revenue	606	559	$ 1,109	1,093
Software revenue
Revenues from External Customers and Long-Lived Assets
Revenue primary component | revenue_component			2
Total revenue	17,586	15,010	$ 31,738	29,988
License
Revenues from External Customers and Long-Lived Assets
Total revenue	3,692	1,962	5,310	3,786
Professional services
Revenues from External Customers and Long-Lived Assets
Total revenue	3,837	3,331	7,076	6,667
Hardware
Revenues from External Customers and Long-Lived Assets
Total revenue	933	507	1,289	1,096
Operations revenue
Revenues from External Customers and Long-Lived Assets
Total revenue	8,462	5,800	13,675	11,549
Maintenance
Revenues from External Customers and Long-Lived Assets
Total revenue	$ 9,124	$ 9,210	$ 18,063	$ 18,439