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Income Taxes - Unrecognized Roll Forward (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
Reconciliation of unrecognized tax benefits: |  |  |
Balance of gross unrecognized tax benefits as of Beginning of Year | $ 678,000 | $ 678,000 | $ 866,000
Increase (Decrease) to unrecognized tax benefits from deemed dividends for investments in US property | 0 | 0 | (3,000)
Increase (Decrease) to unrecognized tax benefits resulting from the release of R&D credits due to the settled IRS audit | 0 | 0 | (185,000)
Increase (Decrease) to unrecognized tax benefits resulting from a state filing tax position | 22,000 | 0 | 0
Balance of gross unrecognized tax benefits as of End of Year | $ 700,000 | $ 678,000 | $ 678,000

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- Definition The amount of increase or decrease to unrecognized tax benefits resulting from deemed dividends for investments in US property. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10B -Publisher FASB -URI https://asc.fasb.org//1943274/2147482525/740-10-45-10B + Details
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