Note H - Employee Benefit Plans - Defined Benefit Pension Plan's Funded Status and Amount Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Change in Benefit Obligation:
Benefit obligation at beginning of year	$ 1,364	$ 1,438
Interest cost	49	46
Actuarial loss	(39)	(29)
Benefits paid	0	(91)
Benefit obligation at end of year	1,374	1,364
Change in Plan Assets:
Fair value of plan assets at beginning of year	1,025	1,094
Actual return on plan assets	91	22
Employer contributions	116	0
Benefits paid	0	(91)
Fair value of plan assets at end of year	1,232	1,025
Reconciliation of Funded Status:
Difference between benefit obligation and fair value of plan assets	(142)	(339)
Unrecognized net actuarial loss in accumulated other comprehensive income	282	409
Net amount recognized	140	70
Projected benefit obligation	1,374	1,364
Accumulated benefit obligation	1,374	1,364
Fair value of plan assets	$ 1,232	$ 1,025