Note D - Leases - Impact of Adoption of Adoption ASC 842 (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jul. 01, 2019	Jun. 30, 2019
Operating lease right-of-use assets	$ 18,354	$ 20,774
Total assets	120,203	114,264	93,490
Deferred rent			543
Long-term liability – Operating leases	18,782	20,897
Deferred income taxes		1,120	1,018
Retained earnings	56,181	57,800	57,380
Total liabilities and equity	$ 120,203	114,264	$ 93,490
Accounting Standards Update 2016-02 [Member]
Operating lease right-of-use assets		20,774
Total assets		20,774
Deferred rent		(543)
Long-term liability – Operating leases		20,897
Deferred income taxes		102
Retained earnings		318
Total liabilities and equity		$ 20,774