Quarterly report pursuant to Section 13 or 15(d)

Investments in Debt Securities (Components of Investments in Debt Securities) (Details)

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Investments in Debt Securities (Components of Investments in Debt Securities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Jun. 30, 2022
Investments in Debt and Equity Securities [Abstract]    
Adjusted cost $ 6,067 $ 11,029
Gross unrealized losses (138) (184)
Fair value $ 5,929 $ 10,845