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Equity-Accounted Investments And Other Long-Term Assets (Summary Of Components Of Equity Securities Without Readily Determinable Fair Value And Held To Maturity Investments) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025
Schedule Of Equity And Held To Maturity Investments [Line Items]
Cost basis	$ 0
Unrealized holding gains	0
Unrealized holding losses	0
Carrying value	0
CPS [Member]
Schedule Of Equity And Held To Maturity Investments [Line Items]
Cost basis	0	$ 0
Unrealized holding gains	0	0
Unrealized holding losses	0	0
Carrying value	$ 0	0
Cedar Cellular [Member]
Schedule Of Equity And Held To Maturity Investments [Line Items]
Cost basis		0
Unrealized holding gains		0
Unrealized holding losses		0
Carrying value		$ 0

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- Definition

Available-for-sale Securities, Accumulated Gross Unrealized loss, before Tax

+ References

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Schedule Of Equity And Held To Maturity Investments [Line Items]

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- Definition

Amount of investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 321
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479536/321-10-50-3

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