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Employee Benefit Plans - Change in Fair Value of Level 3 Assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Change in Fair Value Level 3 assets    
Fair value of plan assets at beginning of year $ 61,286 $ 79,099
Fair value of plan assets at end of year 58,387 61,286
Level 3    
Change in Fair Value Level 3 assets    
Fair value of plan assets at beginning of year 1,962 3,876
Redemptions (603) (1,199)
Change in fair value 193 (715)
Fair value of plan assets at end of year $ 1,552 $ 1,962