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Investments in Debt Securities | 6 Months Ended
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Dec. 31, 2023
Investments in Debt and Equity Securities [Abstract] |
Investments in Debt Securities | 8. Investments in Debt Securities The Company did not hold any investments in debt securities at December 31, 2023 and June 30, 2023. Amortization of premiums paid on the debt securities amounted to $0 and $26,000 for the three months ended December 31, 2023 and 2022, respectively. Amortization of premiums paid on the debt securities amounted to $0 and $62,000 for the six months ended December 31, 2023 and 2022, respectively. No realized gains on available-for-sale debt securities were recognized for the three and six months ended December 31, 2023 and 2022. ​

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