XML 91 R76.htm IDEA: XBRL DOCUMENT v3.23.1
Benefit Plans (Fair value of our pension benefits plan assets) (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Other Investments $ 5,387 $ 5,383 $ 5,555
Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Cash and Cash Equivalents, Fair Value Disclosure 208,357 348,320  
Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Cash and Cash Equivalents, Fair Value Disclosure 0 0  
Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Cash and Cash Equivalents, Fair Value Disclosure 0 0  
Other Defined Benefit Pension Plans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Insurance Contract 5,387 5,383  
Trading Securities, Cost 48,137 66,416  
Cash and Cash Equivalents, Fair Value Disclosure 338 559  
Other Investments 10,285 14,231  
Defined Benefit Plan, Plan Assets, Amount 107,089 142,172 $ 145,452
Debt Securities, Trading 42,942 55,583  
Other Defined Benefit Pension Plans [Member] | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Insurance Contract 0 0  
Cash and Cash Equivalents, Fair Value Disclosure 338 559  
Other Investments 0 0  
Defined Benefit Plan, Plan Assets, Amount 338 559  
Other Defined Benefit Pension Plans [Member] | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Insurance Contract 0 0  
Cash and Cash Equivalents, Fair Value Disclosure 0 0  
Other Investments 10,285 14,231  
Defined Benefit Plan, Plan Assets, Amount 10,285 14,231  
Other Defined Benefit Pension Plans [Member] | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Insurance Contract 5,387 5,383  
Cash and Cash Equivalents, Fair Value Disclosure 0 0  
Other Investments 0 0  
Defined Benefit Plan, Plan Assets, Amount $ 5,387 $ 5,383