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, 2026	Jun. 30, 2025
Assets
Marketable equity security	$ 14,709	$ 6,239
Available-for-Sale Investment:
Auction rate security	0	1,750
Total assets	62,222	8,552
Money market funds
Assets
Cash and cash equivalents	19	44
Certificates of deposit
Assets
Cash and cash equivalents	47,494	519
Level 1
Assets
Marketable equity security	14,709	6,239
Available-for-Sale Investment:
Auction rate security	0	0
Total assets	14,728	6,283
Level 1 \| Money market funds
Assets
Cash and cash equivalents	19	44
Level 1 \| Certificates of deposit
Assets
Cash and cash equivalents	0	0
Level 2
Assets
Marketable equity security	0	0
Available-for-Sale Investment:
Auction rate security	0	0
Total assets	47,494	519
Level 2 \| Money market funds
Assets
Cash and cash equivalents	0	0
Level 2 \| Certificates of deposit
Assets
Cash and cash equivalents	47,494	519
Level 3
Assets
Marketable equity security	0	0
Available-for-Sale Investment:
Auction rate security	0	1,750
Total assets	0	1,750
Level 3 \| Money market funds
Assets
Cash and cash equivalents	0	0
Level 3 \| Certificates of deposit
Assets
Cash and cash equivalents	$ 0	$ 0

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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