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Employee Benefits - Plan's Funded Status and Pension Cost (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Change in benefit obligation    
Beginning of year $ 2,620 $ 3,065
Service cost 43 48
Interest cost 102 79
Actuarial gain (loss) (210) (449)
Benefits paid (124) (123)
End of year $ 2,431 $ 2,620