Quarterly report pursuant to Section 13 or 15(d)

Investments in Debt and Equity Securities (Debt Securities, Contractual Maturity) (Details)

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Investments in Debt and Equity Securities (Debt Securities, Contractual Maturity) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Jun. 30, 2021
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling Maturity, Fair Value [Abstract]    
2022 $ 10,765 $ 11,430
2023 7,407 8,140
Fair value $ 18,172 $ 19,570