XML 77 R66.htm IDEA: XBRL DOCUMENT v3.25.0.1
Note 15 - Employee Benefit Plans - Schedule of Components of Net Periodic Pension and Postretirement Benefit Cost (Details) - USD ($)
 3 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Pension Plan [Member]    
Service cost $ 96,858 $ 81,066
Interest cost 352,602 367,206
Expected return on plan assets (375,976) (294,958)
Recognized loss 14,857 79,132
Net periodic pension cost 88,341 232,446
Postemployment Retirement Benefits [Member]    
Service cost 1,095 7,599
Interest cost 126,856 153,369
Expected return on plan assets (182,430) (133,311)
Recognized loss (58,153) (10,149)
Net periodic pension cost $ (112,632) $ 17,508