Pension And Other Postretirement Benefit Plans (Funded Status In Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets (included in Pension asset and other noncurrent assets)	$ 12,667	$ 11,950
Noncurrent liability (reported as pensions and other postretirement benefits)	(52,890)	(57,637)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets (included in Pension asset and other noncurrent assets)	12,667	11,950
Current liability (included in Accounts payable and accrued expenses)	(1,135)	(4,896)
Noncurrent liability (reported as pensions and other postretirement benefits)	(32,569)	(33,795)
Amounts recognized in the consolidated balance sheets	(21,037)	(26,741)
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets (included in Pension asset and other noncurrent assets)	0	0
Current liability (included in Accounts payable and accrued expenses)	(1,930)	(2,051)
Noncurrent liability (reported as pensions and other postretirement benefits)	(20,321)	(23,842)
Amounts recognized in the consolidated balance sheets	$ (22,251)	$ (25,893)