Note J - Business Segments and Foreign Operations - Reconciliation of Reportable Segments Other Significant Reconciling Items to Consolidated Totals (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Interest income	$ 19	$ 78
Interest expense	2,358	1,860
Income taxes	19,680	(4,169)
Depreciation and amortization	11,243	11,925
Assets	275,413	294,127
Expenditures for segment assets	4,464	10,699
Depreciation and amortization		11,925
Operating Segments [Member]
Interest income	189	368
Interest expense	2,450	2,128
Income taxes	(791)	(1,759)
Depreciation and amortization	10,867	11,530
Assets	411,335	408,535
Expenditures for segment assets	3,688	10,349
Depreciation and amortization		11,530
Segment Reconciling Items [Member]
Interest income	(170)	(290)
Interest expense	(92)	(268)
Income taxes	20,471	(2,410)
Depreciation and amortization	376
Assets	(135,922)	(114,408)
Expenditures for segment assets	$ 776	350
Depreciation and amortization		$ 395