XML 84 R68.htm IDEA: XBRL DOCUMENT v3.24.0.1
Note 9 - Pension and Other Postretirement Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Settlement loss   $ (6,400) $ (2,300)
Pension Plan [Member]      
Service cost $ 2,180 2,378 2,662
Interest cost 2,652 2,326 1,729
Expected return on plan assets (2,695) (2,892) (3,610)
Recognized actuarial loss 1,461 1,724 1,904
Settlement loss 0 6,427 2,304
Net periodic benefit cost 3,598 9,985 4,989
Net (gain) loss 822 (7,726) (2,879)
Net periodic benefit cost 4,420 2,259 2,110
Postemployment Retirement Benefits [Member]      
Service cost 835 1,146 1,462
Interest cost 1,196 760 654
Recognized actuarial loss (38) 368 580
Net periodic benefit cost 998 1,146 1,566
Net (gain) loss 1,114 (4,317) (863)
Net periodic benefit cost 2,112 (3,171) 703
Prior service cost recognition $ (995) $ (1,128) $ (1,130)