Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT PLANS - Fair Value Allocation of Plan Assets (Details)

v3.22.2.2
PENSION AND OTHER POSTRETIREMENT PLANS - Fair Value Allocation of Plan Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Sep. 30, 2021
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   $ 208,344
Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   92,900
Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   101,133
Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   14,311
Equity securities - stocks    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   4,075
Equity securities - stocks | Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   4,075
Equity securities - stocks | Level 1 | Class A common stock    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 4,075  
Equity securities - stocks | Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   0
Equity securities - stocks | Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   0
Fixed income securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   111,536
Fixed income securities | Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   10,403
Fixed income securities | Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   101,133
Fixed income securities | Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   0
Cash and cash equivalents    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   78,422
Cash and cash equivalents | Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   78,422
Cash and cash equivalents | Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   0
Cash and cash equivalents | Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   0
Other investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   14,311
Other investments | Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   0
Other investments | Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   0
Other investments | Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   $ 14,311