Note E - Leases - Impact of Adoption of Adoption ASC 842 (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jul. 01, 2019	Jun. 30, 2019
Operating lease right-of-use assets	$ 20,145	$ 20,774
Total assets	115,237	114,264	93,490
Deferred rent			543
Long-term liability – Operating leases	20,174	20,897
Retained earnings	58,024	57,800	57,380
Total liabilities and equity	$ 115,237	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
Retained earnings		420
Total liabilities and equity		$ 20,774