Note G - Segment Information - Assets and Capital Expenditures by Geographical Region (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017
Long-Lived Assets	$ 18,369		$ 18,136
Total assets	80,949		72,611
Capital Expenditures	956	$ 1,716
UNITED STATES
Long-Lived Assets	10,491		10,753
Total assets	53,045		47,777
Capital Expenditures	89	1,227
Europe [Member]
Long-Lived Assets	7,878		7,383
Total assets	27,904		$ 24,834
Capital Expenditures	$ 867	$ 489