XML 89 R76.htm IDEA: XBRL DOCUMENT v3.21.2
EMPLOYEE BENEFIT PLANS - Pension and post-retirement plan assets by asset category (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets $ 160,523 $ 147,145  
Defined benefit plan, fair value of plan assets, subtotal excluding accrued income and plan receivables 160,238 142,179  
Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets, subtotal excluding accrued income and plan receivables 121,655 105,929  
Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets, subtotal excluding accrued income and plan receivables 27,297 26,888  
Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 11,286 9,362 $ 8,776
Defined benefit plan, fair value of plan assets, subtotal excluding accrued income and plan receivables 11,286 9,362  
Cash and equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 1,867 600  
Cash and equivalents | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 1,867 600  
Cash and equivalents | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 0 0  
Cash and equivalents | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 0 0  
Government agency securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 36,825 39,811  
Government agency securities | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 32,217 33,675  
Government agency securities | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 4,608 6,136  
Government agency securities | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 0 0  
Debt instruments      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 3,769 2,901  
Debt instruments | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 1,063 179  
Debt instruments | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 2,706 2,722  
Debt instruments | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 0 0  
Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 84,129 68,987  
Equity securities | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 84,129 68,987  
Equity securities | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 0 0  
Equity securities | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 0 0  
Commingled funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 11,286 9,362  
Commingled funds | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 0 0  
Commingled funds | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 0 0  
Commingled funds | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 11,286 9,362  
Limited partnerships and hedge fund investments      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 19,823 17,867  
Limited partnerships and hedge fund investments | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 0 0  
Limited partnerships and hedge fund investments | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 19,823 17,867  
Limited partnerships and hedge fund investments | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 0 0  
Other Securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 2,539 2,651  
Other Securities | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 2,379 2,488  
Other Securities | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 160 163  
Other Securities | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets 0 0  
Accrued income and plan receivables      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, fair value of plan assets $ 285 $ 4,966