v3.25.4
Intangible Assets - Narrative (Details)
 3 Months Ended 9 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2025
USD ($)
county
Dec. 31, 2024
USD ($)
county
Acquired Indefinite-lived Intangible Assets [Line Items]        
Impairment $ 0 $ 0 $ 0 $ 0
Broadband licenses granted, number of counties | county     173 20
Exchanges - licenses received     $ 121,277,000 $ 23,838,000
Licenses exchanged     26,953,000 2,992,000
Gain on exchange of intangible assets, net 800,000 20,800,000 94,300,000 20,800,000
Payments to acquire intangible assets     19,800,000 12,621,000
Decrease in contingent liability     (7,064,000) (10,000,000)
Gain on sale of intangible assets, net 329,000 $ 0 12,759,000 0
Licensing Agreements        
Acquired Indefinite-lived Intangible Assets [Line Items]        
Exchanges - licenses received     121,300,000 23,800,000
Licenses exchanged     $ 27,000,000.0 3,000,000.0
Licensing Agreements | Lower Colorado River Authority        
Acquired Indefinite-lived Intangible Assets [Line Items]        
Broadband licenses granted, number of counties | county     60  
Broadband licenses transferred, total consideration     $ 29,300,000  
Payments to acquire intangible assets     14,000,000  
Decrease in contingent liability     15,300,000  
Reduction of intangible assets 400,000   16,500,000  
Gain on sale of intangible assets, net $ 300,000   $ 12,800,000  
Licensing Agreements | Oncor Electric Delivery Company LLC        
Acquired Indefinite-lived Intangible Assets [Line Items]        
Broadband licenses granted, number of counties | county     3  
Broadband licenses transferred, total consideration     $ 300,000 0
Reduction of intangible assets     300,000 0
Gain on sale of intangible assets, net     $ 8,000 $ 0