Broadband License Sale, Assets Allocated From Previously Received, Amount

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- Definition

Broadband Licenses Granted, Estimated Consideration

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Broadband Licenses Granted, Number of Counties

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- Definition

Collaborative Arrangement, Rights and Obligations, Agreement Term

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- Definition

Collaborative Arrangement, Rights And Obligations, Contingent Consideration, Current

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- Definition

Collaborative Arrangement, Rights And Obligations, Contingent Consideration, Noncurrent

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- Definition

Collaborative Arrangement, Rights and Obligations, Milestone Payment Received

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- Definition

Collaborative Arrangement, Rights and Obligations, Number Of States In Service Territory

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- Definition

Commitments And Contingencies [Line Items]

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- Definition

Amount of consideration transferred in asset acquisition. Includes, but is not limited to, cash, liability incurred by acquirer, and equity interest issued by acquirer.

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- Definition

Amount of liability recognized from contingent consideration in asset acquisition, classified as current.

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- Definition

Amount of increase (decrease) in value of liability in contingent consideration arrangement in business combination, including, but not limited to, difference arising upon settlement.

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount of discretionary contributions made by an employer to a defined contribution plan.

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- Definition

The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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- Definition

Amount of cash inflow from the collection of receivables classified as other.

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Contingencies and Guaranty (Details) $ in Thousands	1 Months Ended						3 Months Ended	9 Months Ended		12 Months Ended
Contingencies and Guaranty (Details) $ in Thousands	Jun. 30, 2025 USD ($)	Jan. 31, 2025 USD ($)	Jun. 30, 2024 USD ($)	Apr. 30, 2023 USD ($)	Oct. 31, 2022 state	Feb. 28, 2021 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($) county	Dec. 31, 2024 USD ($) county	Mar. 31, 2025 USD ($) country	Sep. 30, 2025 USD ($)	Nov. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)
Commitments And Contingencies [Line Items]
Payments to acquire intangible assets								$ 19,800	$ 12,621
Contingent liability								$ 9,150		$ 8,093
Broadband licenses granted, number of counties \| county								173	20
Decrease in contingent liability								$ (7,064)	$ (10,000)
Contract with customer liability								132,596	126,061	$ 124,672	$ 130,416		$ 126,627	$ 122,212
Employer contribution amount								300	$ 400
Collaborative Arrangement, Transaction with Party to Collaborative Arrangement \| Wireless Licenses
Commitments And Contingencies [Line Items]
Consideration transferred	$ 28,000
Collaborative Arrangement, Transaction with Party to Collaborative Arrangement \| Maximum \| Wireless Licenses
Commitments And Contingencies [Line Items]
Contract with customer liability								21,500
Lower Colorado River Authority (LCRA) \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Commitments And Contingencies [Line Items]
Short-term contingent consideration								1,100
Long-term contingent consideration								6,000
Lower Colorado River Authority (LCRA) \| Licensing Agreements
Commitments And Contingencies [Line Items]
Payments to acquire intangible assets				$ 30,000
Contingent liability												$ 1,400
Broadband licenses granted estimated consideration		$ 13,500
Lower Colorado River Authority \| Licensing Agreements
Commitments And Contingencies [Line Items]
Payments to acquire intangible assets								$ 14,000
Broadband licenses granted, number of counties \| county								60
Decrease in contingent liability								$ 15,300
Broadband license narrowband spectrum licenses previously received								$ 1,300
Oncor Electric Delivery Company LLC \| Licensing Agreements
Commitments And Contingencies [Line Items]
Broadband licenses granted estimated consideration			$ 102,500
Broadband licenses granted, number of counties \| county								3
Long-term contingent consideration								$ 7,000
Oncor Electric Delivery Company LLC \| Licensing Agreements For Four Counties
Commitments And Contingencies [Line Items]
Broadband licenses granted, number of counties \| country										4
Oncor Electric Delivery Company LLC \| Licensing Agreements For Four Counties \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Commitments And Contingencies [Line Items]
Milestone payment received										$ 34,000
Proceeds from nontrade receivable							$ 2,900
Oncor Electric Delivery Company LLC \| Licensing Agreements For Three Counties \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Commitments And Contingencies [Line Items]
Milestone payment received								300
Proceeds from nontrade receivable								20
Xcel Energy \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Commitments And Contingencies [Line Items]
Agreement term (in years)					20 years
Number of states in service territory \| state					8
Contract with customer liability								74,700
Xcel Energy \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement \| Maximum
Commitments And Contingencies [Line Items]
Contract with customer liability								66,900
SDG&E
Commitments And Contingencies [Line Items]
Consideration transferred						$ 50,000
Contingent consideration, liability, current								$ 1,000		$ 1,000