Note G - Segment Information - Assets and Capital Expenditures by Geographical Region (Details) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017
Long-Lived Assets	$ 18,733		$ 18,136
Total assets	84,587		72,611
Capital Expenditures	2,095	$ 3,362
UNITED STATES
Long-Lived Assets	10,461		10,753
Total assets	53,353		47,777
Capital Expenditures	426	1,812
Europe [Member]
Long-Lived Assets	8,272		7,383
Total assets	31,234		$ 24,834
Capital Expenditures	$ 1,669	$ 1,550