Consolidated Statements of Comprehensive Earnings (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 120,849	$ 105,005
Net Actuarial Change in Defined Benefit Plans
Amortization of Net Actuarial Loss	63	30
Tax Expense	(15)	(7)
Comprehensive Earnings	$ 120,897	$ 105,028