Fair Value Measurements (Reconciliation Of Change In Balance Of Financial Liability For Guarantees Of Bank Loans To Tobacco Growers) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in discount rate and estimated collection period	$ (4,200)
Guarantees [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning of year	103	$ 803
Payments under the guarantees and transfers to allowance for loss on direct loans to farmers (removal of prior crop year loans from the portfolio)	3	58
Provision for loss or transfers from allowance for loss on direct loans to farmers (addition of current crop year loans)	0	(79)
Change in discount rate and estimated collection period	(2)	(5)
Currency remeasurement	(5)	8
Balance at end of year	$ 99	$ 785