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Retirement Plans - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
Supplemental Savings Plan |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Contribution expense | $ 800 | $ 900 | $ 1,600
Employee contribution maximum, percentage of base compensation | 50.00% |  |
Employee contribution maximum, percentage of bonuses | 100.00% |  |
Employer contribution percentage | 5.00% |  |
Annual IRC compensation limit | $ 330 |  |
Employer contribution vesting period | 5 years |  |
Supplemental savings plan obligation | $ 114,400 |  |
Supplemental savings plan obligation, current portion | 9,300 |  |
Increase (decrease) in supplemental savings plan obligation | 4,700 |  |
Distributions paid to participants | 12,900 |  |
Supplemental savings plan investment gains (losses) | 3,700 |  |
Supplemental savings plan participant compensation deferral | 13,100 |  |
Company contributions | 800 |  |
Supplemental savings plan COLI gains (losses) | 3,300 |  |
COLI portion of supplemental savings plan assets | 96,700 |  |
Defined Contribution Plans |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Contribution expense | $ 99,000 | $ 100,300 | $ 97,600

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