XML 58 R49.htm IDEA: XBRL DOCUMENT v3.22.0.1
Pension and Retirement Plans - Components of net periodic benefit costs (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Pension    
Pension:    
Interest cost $ 73 $ 61
Expected return on plan assets (122) (97)
Amortization of:    
Amortization of past service costs 2 2
Amortization of net (gain) loss 25 45
Net periodic benefit cost (22) 11
Post Retirement    
Pension:    
Service cost 11 11
Interest cost 12 11
Amortization of:    
Amortization of net (gain) loss (2) 13
Net periodic benefit cost 21 35
U.S. | Pension    
Pension:    
Interest cost 2 3
Amortization of:    
Amortization of net (gain) loss   1
Net periodic benefit cost 2 4
U.S. | Post Retirement    
Pension:    
Service cost 11 11
Interest cost 12 11
Amortization of:    
Amortization of net (gain) loss (2) 13
Net periodic benefit cost 21 35
U.K. | Pension    
Pension:    
Interest cost 71 58
Expected return on plan assets (122) (97)
Amortization of:    
Amortization of past service costs 2 2
Amortization of net (gain) loss 25 44
Net periodic benefit cost $ (24) $ 7