v3.26.1
Note M - Pension and Other Postretirement Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Amortization of actuarial net loss $ (53) $ (262)
Net periodic benefit cost (income) 91 (90)
Pension Plan [Member]    
Service cost 356 347
Interest cost 3,134 3,400
Prior service cost 21 21
Expected return on plan assets (3,043) (3,411)
Amortization of transition obligation 33 42
Amortization of prior service cost 0 26
Amortization of actuarial net loss 2,590 984
Net periodic benefit cost (income) 3,091 1,409
Service cost 352 352
Interest cost 3,132 3,404
Other Postretirement Benefits Plan [Member]    
Prior service cost 0 0
Amortization of prior service cost 0 0
Net periodic benefit cost (income) 91 (90)
Service cost 5 7
Interest cost $ 139 $ 165