Other Contingent Liabilities And Other Matters (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2024
Other Contingent Liabilities and Other Matters [Line Items]
Other contingent liabilities	$ 1,000
Net provision for losses (recoveries) on advances to suppliers	(445)	$ 9,950
Stock repurchase program authorized amount	100,000
Stock repurchase program remaining authorized repurchase amount	100,000
Advances to suppliers [Member]
Other Contingent Liabilities and Other Matters [Line Items]
Advances to suppliers current and non-current	172,000	186,000	$ 162,000
Valuation allowances	15,000	25,000	20,000
Net provision for losses (recoveries) on advances to suppliers	(400)	10,000
Recoverable value added tax credits [Member]
Other Contingent Liabilities and Other Matters [Line Items]
Aggregate balance of recoverable value added tax credits	62,000	63,000	72,000
Valuation allowances	21,000	$ 21,000	$ 21,000
Parana [Member]
Other Contingent Liabilities and Other Matters [Line Items]
Brazil audit assessment for tax, penalties, and interest on recoverable value added tax credits	9,000
Reduced Brazil audit assessment for tax, penalties, and interest on recoverable value added tax credits	2,000
Loss contingency amount accrued	0
Parana [Member] | Minimum [Member]
Other Contingent Liabilities and Other Matters [Line Items]
Estimate of possible loss on remaining VAT audit assessment	0
Parana [Member] | Maximum [Member]
Other Contingent Liabilities and Other Matters [Line Items]
Estimate of possible loss on remaining VAT audit assessment	$ 2,000