Credit Facilities (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Debt Instrument [Line Items]
Five-year revolving credit facility	$ 530,000
Revolving credit facility, term	5 years
Amounts outstanding under line of credit facility	$ 125,000
Additional borrowings under present credit agreement	200,000
Outstanding uncommitted lines of credit	$ 417,217	$ 195,564
Weighted average interest rates on short-term borrowings outstanding	6.70%	6.20%
Uncommitted lines of credit [Member]
Debt Instrument [Line Items]
Outstanding uncommitted lines of credit	$ 292,000	$ 166,000
Unused lines of Credit [Member]
Debt Instrument [Line Items]
Outstanding uncommitted lines of credit	135,000
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