Note H - Employee Benefit Plans - Defined Benefit Pension Plan's Funded Status and Amount Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Change in Benefit Obligation:
Benefit obligation at beginning of year	$ 1,438	$ 1,820
Interest cost	46	39
Actuarial loss	(29)	(276)
Benefits paid	(91)	(145)
Benefit obligation at end of year	1,364	1,438
Change in Plan Assets:
Fair value of plan assets at beginning of year	1,094	1,429
Actual return on plan assets	22	(190)
Defined Benefit Plan, Plan Assets, Contributions by Employer	0	0
Benefits paid	(91)	(145)
Plan expenses	0	0
Fair value of plan assets at end of year	1,025	1,094
Reconciliation of Funded Status:
Difference between benefit obligation and fair value of plan assets	(339)	(344)
Unrecognized net actuarial loss in accumulated other comprehensive income	409	495
Net amount recognized	70	151
Projected benefit obligation	1,364	1,438
Accumulated benefit obligation	1,364	1,438
Fair value of plan assets	$ 1,025	$ 1,094