Quarterly report pursuant to Section 13 or 15(d)

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

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Investments in Debt and Equity Securities (Components of Investments in Debt Securities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Jun. 30, 2021
Investments in Debt and Equity Securities [Abstract]    
Adjusted cost $ 14,944 $ 19,603
Gross unrealized losses (131) (33)
Fair value $ 14,813 $ 19,570