Note 1. Business Description and Summary of Significant Accounting Policies - Textuals (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Jun. 30, 2018
Operating Income (Loss)	$ 14,497	$ 11,130	$ 31,741	$ 30,772
Other General Income	0	0	$ (92)	0
Accounts Receivable, Extended Payment Terms			45 days
Accounts Receivable Sold Without Recourse			$ 191,000	120,100
Due From Bankers Acceptance Drafts	2,700		2,700		$ 3,800
SettlementofBankersAcceptanceDrafts			2,300	4,000
Factoring Fees	400	300	1,300	800
Non-operating income (expense), net	1,323	2,125	$ 632	4,097
Minimum
Accounts Receivable, Customary Payment Terms			30 days
Maximum
Accounts Receivable, Customary Payment Terms			45 days
Accounting Standards Update 2017-07
Operating Income (Loss)	(110)	(81)	$ (316)	(222)
Non-operating income (expense), net	$ 110	$ 81	$ 316	$ 222