v3.26.1
Property and Equipment - Components of Property and Equipment (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Mar. 31, 2025
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 6,930 $ 12,086
Less accumulated depreciation 6,103 10,784
Property and equipment, net 827 1,302
Network sites and equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 4,518 9,614
Network sites and equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Estimated useful life 5 years  
Network sites and equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Estimated useful life 10 years  
Computer software    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 861 861
Computer software | Minimum    
Property, Plant and Equipment [Line Items]    
Estimated useful life 1 year  
Computer software | Maximum    
Property, Plant and Equipment [Line Items]    
Estimated useful life 7 years  
Computer equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 292 303
Computer equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Estimated useful life 5 years  
Computer equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Estimated useful life 7 years  
Furniture and fixture and other equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 440 489
Furniture and fixture and other equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Estimated useful life 2 years  
Furniture and fixture and other equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Estimated useful life 5 years  
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Estimated useful life 10 years  
Property and equipment, gross $ 819 $ 819