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Investments - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Investments, All Other Investments [Abstract]    
Gross proceeds from matured or redeemed securities $ 3,700,000 $ 2,200,000
Equity securities, at cost $ 43,172 $ 43,172