Fair Value Measurements (Narratives) (Details) - USD ($)	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Assets/Liabilities
Transfers of assets between Level 1 and Level 2	$ 0	$ 0
Transfers of liabilities between Level 1 and Level 2	0	0
Transfers of assets between Level 2 and Level 3	0	0
Transfers of liabilities between Level 2 and Level 3	0	0
Not Designated as Hedging Instrument \| Forward Foreign Currency Contracts
Assets/Liabilities
Notional principal amount of contracts	68,000,000	57,200,000
Gain (loss) on foreign currency derivative instruments	(4,000,000)	1,000,000	$ (300,000)
Designated as Hedging Instrument \| Forward Foreign Currency Contracts
Assets/Liabilities
Unrealized gain (loss) on derivatives		0
Designated as Hedging Instrument \| Zero-Cost Collar Contracts
Assets/Liabilities
Notional principal amount of contracts	82,500,000	0
Unrealized gain (loss) on derivatives	(1,800,000)
Recurring
Assets/Liabilities
Certificate of deposits	2,729,000	6,089,000
Level 2 Assets and Liabilities
Assets/Liabilities
Long-term debt, fair value	165,000,000.0	180,000,000.0
Level 2 Assets and Liabilities \| Recurring
Assets/Liabilities
Certificate of deposits	2,729,000	6,089,000
Level 3 Assets and Liabilities
Assets/Liabilities
Fair value, measurement level 3 liabilities transfers	0	0
Fair value, measurement level 3 assets, transfers	0	0
Fair value assets impairment	$ 0	$ 0	$ 0

Certificates of deposit at fair value.

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- Definition

Total loss recognized during the period from the loss recognized in the period resulting from the impairment of the fair valued assets.

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- Definition

Fair value assets level1 to level2 transfer amount.

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Fair value assets Level 2 to Level 3 transfers amount.

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Fair value liabilities Level 2 to Level 3 transfers amount.

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Fair value liability level1 to level2 transfer amount.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

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- Definition

Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.

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Amount of transfers of financial instrument classified as a liability into (out of) level 3 of the fair value hierarchy.

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- Definition

Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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