Consolidated Statements of Comprehensive Earnings (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 133,842	$ 120,849
Net Actuarial Change in Defined Benefit Plans
Amortization of Net Actuarial Loss	60	63
Tax Expense	(15)	(15)
Comprehensive Earnings	$ 133,887	$ 120,897