Note 1. Business Description and Summary of Significant Accounting Policies - Textuals (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jul. 01, 2019	Jun. 30, 2019
Accounts Receivable, Extended Payment Terms			45 days
Accounts Receivable Sold Without Recourse			$ 202,000,000	$ 191,000,000
Factoring Fees	$ 400,000	$ 400,000	1,500,000	1,300,000
Due From Bankers Acceptance Drafts	4,000,000		4,000,000			$ 4,200,000
SettlementofBankersAcceptanceDrafts			6,500,000	2,300,000
Other General Income	0	$ 0	0	$ (92,000)
Long-term income taxes payable	9,765,000		9,765,000			$ 9,765,000
Operating Lease, Right-of-Use Asset	2,041,000		2,041,000
Operating Lease, Liability	$ 2,041,000		$ 2,041,000
Minimum
Accounts Receivable, Customary Payment Terms			30 days
Maximum
Accounts Receivable, Customary Payment Terms			45 days
Accounting Standards Update 2016-02
Lease, Practical Expedients, Package			true
Operating Lease, Right-of-Use Asset					$ 2,600,000
Operating Lease, Liability					2,600,000
Cumulative Effect of New Accounting Principle in Period of Adoption					$ 0