Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2013
Assets:
Money market funds	$ 1,527	$ 1,527	$ 1,526
Trading securities associated with deferred compensation plans	20,039	19,754	19,174
Forward foreign currency exchange contracts	5,172	2,074	8
Total financial assets measured and reported at fair value	26,738	23,355	20,708
Liabilities:
Guarantees of bank loans to tobacco growers	1,797	2,270	4,454
Interest rate swap agreements	638	936	1,170
Forward foreign currency exchange contracts	109	3,973	4,511
Total financial liabilities measured and reported at fair value	2,544	7,179	10,135
Level 1 [Member]
Assets:
Money market funds	0	0	0
Trading securities associated with deferred compensation plans	20,039	19,754	19,174
Forward foreign currency exchange contracts	0	0	0
Total financial assets measured and reported at fair value	20,039	19,754	19,174
Liabilities:
Guarantees of bank loans to tobacco growers	0	0	0
Interest rate swap agreements	0	0	0
Forward foreign currency exchange contracts	0	0	0
Total financial liabilities measured and reported at fair value	0	0	0
Level 2 [Member]
Assets:
Money market funds	1,527	1,527	1,526
Trading securities associated with deferred compensation plans	0	0	0
Forward foreign currency exchange contracts	5,172	2,074	8
Total financial assets measured and reported at fair value	6,699	3,601	1,534
Liabilities:
Guarantees of bank loans to tobacco growers	0	0	0
Interest rate swap agreements	638	936	1,170
Forward foreign currency exchange contracts	109	3,973	4,511
Total financial liabilities measured and reported at fair value	747	4,909	5,681
Level 3 [Member]
Assets:
Money market funds	0	0	0
Trading securities associated with deferred compensation plans	0	0	0
Forward foreign currency exchange contracts	0	0	0
Total financial assets measured and reported at fair value	0	0	0
Liabilities:
Guarantees of bank loans to tobacco growers	1,797	2,270	4,454
Interest rate swap agreements	0	0	0
Forward foreign currency exchange contracts	0	0	0
Total financial liabilities measured and reported at fair value	$ 1,797	$ 2,270	$ 4,454