Business and Accounting Policies Textuals (Details)	12 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Business and Accounting Policies (Textuals) [Abstract]
Company's domestic inventory relate to LIFO layers	16.80%
Number of LIFO pools maintained (in pools)	5
Shipping, Handling and Transportation Costs	$ 19,320,000	$ 20,060,000	$ 21,480,000
Vesting period of SARs and stock option awards	4 years
Contractual Terms of SARs and stock option awards	10 years
Net other periodic post-employment costs	$ 245,000	796,000	981,000
Computer Software, Intangible Asset [Member]
Business and Accounting Policies (Textuals) [Abstract]
Finite-Lived Intangible Asset, Useful Life	12 years
Buildings,BuildingsImprovementsandLeaseholdImprovementsMinimumUsefulLife [Member]
Business and Accounting Policies (Textuals) [Abstract]
Property, Plant and Equipment, Useful Life	10 years
Buildings,BuildingsImprovementsandLeaseholdImprovements MaximumUsefulLife [Member]
Business and Accounting Policies (Textuals) [Abstract]
Property, Plant and Equipment, Useful Life	30 years
PropertyandEquipmentMinimumUsefulLife [Member]
Business and Accounting Policies (Textuals) [Abstract]
Property, Plant and Equipment, Useful Life	3 years
PropertyandEquipmentMaximumUsefulLife [Member]
Business and Accounting Policies (Textuals) [Abstract]
Property, Plant and Equipment, Useful Life	10 years
Adjustments for New Accounting Principle, Early Adoption [Member]
Business and Accounting Policies (Textuals) [Abstract]
Defined Benefit Plan, Service Cost	$ 143,000	155,000	113,000
Net other periodic post-employment costs	245,000	796,000	981,000
Reclassification of certain income tax effects to retained earnings, net amount	(471,000)	$ 0	$ 0
Adjustments for New Accounting Pronouncement [Member]
Business and Accounting Policies (Textuals) [Abstract]
Reclassification of certain income tax effects to retained earnings, net amount	$ 471