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Business and Accounting Policies Textuals (Details) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($)
Allowance for Doubtful Accounts Receivable, Current | $ 16,455 | $ 13,661 |
Company's domestic inventory relate to LIFO layers | 19.80% |  |
Number of LIFO pools maintained (in pools) | 5 |  |
Revenue Recognition, Sales Returns Reserve | $ 9,772 | 9,883 |
Shipping and Handling Costs | $ 15,970 | 19,620 | $ 24,090
Vesting period of SARs and stock option awards | 4 years |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 50.00% |  |
Defined Contribution Plan, Cost | $ 3,945 | 5,959 | 7,711
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 401 | 317 | 414
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months | 800 |  |
Defined Benefit Plan, Expected Future Benefit Payment, Year Three | $ 200 |  |
Lessee, Operating Lease, Renewal Term | 5 years |  |
KERP [Member] |  |  |
Defined Contribution Plan, Cost | $ 334 | 189 | 400
Pension Plan [Member] |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 46 | (116) | (34)
Other Postretirement Benefits Plan |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | $ (161) | $ (257) | $ (418)
Computer Software, Intangible Asset [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 12 years |  |
Buildings,BuildingsImprovementsandLeaseholdImprovementsMinimumUsefulLife [Member] |  |  |
Property, Plant and Equipment, Useful Life | 10 years |  |
Buildings,BuildingsImprovementsandLeaseholdImprovements MaximumUsefulLife [Member] |  |  |
Property, Plant and Equipment, Useful Life | 30 years |  |
PropertyandEquipmentMinimumUsefulLife [Member] |  |  |
Property, Plant and Equipment, Useful Life | 3 years |  |
PropertyandEquipmentMaximumUsefulLife [Member] |  |  |
Property, Plant and Equipment, Useful Life | 10 years |  |
Minimum [Member] |  |  |
Lessee, Operating Lease, Term of Contract | 1 year |  |
Maximum [Member] |  |  |
Lessee, Operating Lease, Term of Contract | 15 years |  |

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