Financial Instruments and Fair Value Measurements - Schedule of Cash Equivalents and Long-Term Investments Measured at Fair value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Jun. 30, 2024
Money market funds
Asset at Fair Value
Restricted cash and equivalents	$ 200	$ 200
Fair Value, Measurements, Recurring
Asset at Fair Value
Total assets measured at fair value	6,079	6,341
Level 1 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Total assets measured at fair value	3,771	4,026
Level 2 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Total assets measured at fair value	479	486
Level 3 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Total assets measured at fair value	1,829	1,829
Investment in marketable equity security \| Fair Value, Measurements, Recurring
Asset at Fair Value
Investment in marketable equity security	3,482	3,686
Investment in marketable equity security \| Level 1 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Investment in marketable equity security	3,482	3,686
Investment in marketable equity security \| Level 2 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Investment in marketable equity security	0	0
Investment in marketable equity security \| Level 3 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Investment in marketable equity security	0	0
Auction rate security \| Fair Value, Measurements, Recurring
Asset at Fair Value
Auction rate security	1,829	1,829
Auction rate security \| Level 1 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Auction rate security	0	0
Auction rate security \| Level 2 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Auction rate security	0	0
Auction rate security \| Level 3 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Auction rate security	1,829	1,829
Money market funds
Asset at Fair Value
Cash and cash equivalents	100	100
Money market funds \| Fair Value, Measurements, Recurring
Asset at Fair Value
Cash and cash equivalents	289	340
Money market funds \| Level 1 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Cash and cash equivalents	289	340
Money market funds \| Level 2 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Cash and cash equivalents	0	0
Money market funds \| Level 3 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Cash and cash equivalents	0	0
Certificates of deposit \| Fair Value, Measurements, Recurring
Asset at Fair Value
Cash and cash equivalents	479	486
Certificates of deposit \| Level 1 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Cash and cash equivalents	0	0
Certificates of deposit \| Level 2 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Cash and cash equivalents	479	486
Certificates of deposit \| Level 3 \| Fair Value, Measurements, Recurring
Asset at Fair Value
Cash and cash equivalents	$ 0	$ 0

Fair value portion of asset recognized for present right to economic benefit.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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