Quarterly report pursuant to Section 13 or 15(d)

Pension and Other Postretirement Benefit Plans

v3.21.1
Pension and Other Postretirement Benefit Plans
 6 Months Ended
Mar. 31, 2021
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefit Plans Pension and Other Postretirement Benefit Plans
The Company provides defined benefit pension and other postretirement plans to certain employees. Net periodic pension and other postretirement benefit cost for the plans included the following:
  Three months ended March 31,
  Pension Other Postretirement
  2021 2020 2021 2020
Service cost $ 1,983  $ 2,170  $ 50  $ 64 
Interest cost * 1,546  1,933  94  140 
Expected return on plan assets * (2,762) (2,232) —  — 
Amortization:        
Prior service cost (41) (47) (91) (23)
Net actuarial loss * 3,023  2,386  —  — 
Net benefit cost $ 3,749  $ 4,210  $ 53  $ 181 

  Six months ended March 31,
  Pension Other Postretirement
  2021 2020 2021 2020
Service cost $ 4,196  $ 4,340  $ 100  $ 128 
Interest cost * 3,094  3,866  188  280 
Expected return on plan assets * (5,525) (4,464) —  — 
Amortization:        
Prior service cost (58) (94) (182) (46)
Net actuarial loss * 6,044  4,773  —  — 
Net benefit cost $ 7,751  $ 8,421  $ 106  $ 362 
* Non-service components of pension and postretirement expense are included in other income (deductions), net.
Benefit payments under the Company's principal retirement plan are made from plan assets, while benefit payments under the postretirement benefit plan are made from the Company's operating funds. In April 2021, subsequent to the date of the balance sheet, the Company contributed $15,000 to its principal retirement plan. Under IRS regulations, no further contributions are required to be made to the Company's principal retirement plan during fiscal 2021.
Note 10.   Pension and Other Postretirement Benefit Plans (continued)

Contributions made and anticipated for fiscal year 2021 are as follows:
Contributions Pension Other Postretirement
Contributions during the six months ended March 31, 2021:    
Supplemental retirement plan $ 408  $ — 
Other postretirement plan —  228 
Additional contributions expected in fiscal 2021:    
Principal retirement plan * $ 15,000  $ — 
Supplemental retirement plan 497  — 
Other postretirement plan —  603 
* Contribution was made in April 2021 (see above).