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Credit Facilities (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Debt Instrument [Line Items]    
Five-year revolving credit facility $ 530,000  
Revolving credit facility, term 5 years  
Amounts outstanding under line of credit facility $ 30,000  
Additional borrowings under present credit agreement 200,000  
Outstanding uncommitted lines of credit $ 195,564 $ 182,639
Weighted average interest rates on short-term borrowings outstanding 6.20% 2.70%
Uncommitted lines of credit [Member]    
Debt Instrument [Line Items]    
Outstanding uncommitted lines of credit $ 166,000 $ 83,000
Unused lines of Credit [Member]    
Debt Instrument [Line Items]    
Outstanding uncommitted lines of credit 183,000  
Five-year term [Member]    
Debt Instrument [Line Items]    
Term loan $ 275,000  
Number of Years of Bank Credit Agreement 5 years  
Seven-year term [Member]    
Debt Instrument [Line Items]    
Term loan $ 345,000  
Number of Years of Bank Credit Agreement 7 years