v3.25.2
Condensed Consolidated Financial Statements' Components - Property and Equipment, Net (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 92,519 $ 93,759
Accumulated depreciation (86,436) (87,807)
Total property and equipment, net 6,083 5,952
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Total property and equipment 2,564 2,430
Asset retirement costs    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 4,864 4,864
Asset retirement costs | Minimum    
Property, Plant and Equipment [Line Items]    
Useful Life (In Years) 1 year  
Asset retirement costs | Maximum    
Property, Plant and Equipment [Line Items]    
Useful Life (In Years) 15 years  
Paging and computer equipment    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 82,526 83,895
Paging and computer equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Useful Life (In Years) 1 year  
Paging and computer equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Useful Life (In Years) 5 years  
Furniture, fixtures and vehicles    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 2,565 $ 2,570
Furniture, fixtures and vehicles | Minimum    
Property, Plant and Equipment [Line Items]    
Useful Life (In Years) 3 years  
Furniture, fixtures and vehicles | Maximum    
Property, Plant and Equipment [Line Items]    
Useful Life (In Years) 5 years