Other Contingent Liabilities And Other Matters (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 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	(751)	$ 1,382
Stock repurchase program authorized amount	100,000
Stock repurchase program remaining authorized repurchase amount	95,000
Advances to suppliers [Member]
Other Contingent Liabilities and Other Matters [Line Items]
Advances to suppliers current and non-current	120,000	138,000	$ 162,000
Valuation allowances	19,000	26,000	20,000
Net provision for losses (recoveries) on advances to suppliers	(800)	1,400
Recoverable value added tax credits [Member]
Other Contingent Liabilities and Other Matters [Line Items]
Aggregate balance of recoverable value added tax credits	68,000	76,000	72,000
Valuation allowances	21,000	$ 22,000	$ 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	10,000
Reduced Brazil audit assessment for tax, penalties, and interest on recoverable value added tax credits	3,000
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	$ 3,000