Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014
Assets:
Money market funds	$ 1,574	$ 86,552	$ 1,527
Trading securities associated with deferred compensation plans	20,003	20,692	20,582
Interest rate swap agreements	1,960
Forward foreign currency exchange contracts	620	5,254	397
Total financial assets measured and reported at fair value	24,157	112,498	22,506
Liabilities:
Guarantees of bank loans to tobacco growers	1,569	1,674	2,390
Interest rate swap agreements		3,050	887
Forward foreign currency exchange contracts	360	579	1,635
Total financial liabilities measured and reported at fair value	1,929	5,303	4,912
Level 1 [Member]
Assets:
Money market funds	0	0	0
Trading securities associated with deferred compensation plans	20,003	20,692	20,582
Interest rate swap agreements	0
Forward foreign currency exchange contracts	0	0	0
Total financial assets measured and reported at fair value	20,003	20,692	20,582
Liabilities:
Guarantees of bank loans to tobacco growers	0	0	0
Interest rate swap agreements		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	1,574	86,552	1,527
Trading securities associated with deferred compensation plans	0	0	0
Interest rate swap agreements	1,960
Forward foreign currency exchange contracts	620	5,254	397
Total financial assets measured and reported at fair value	4,154	91,806	1,924
Liabilities:
Guarantees of bank loans to tobacco growers	0	0	0
Interest rate swap agreements		3,050	887
Forward foreign currency exchange contracts	360	579	1,635
Total financial liabilities measured and reported at fair value	360	3,629	2,522
Level 3 [Member]
Assets:
Money market funds	0	0	0
Trading securities associated with deferred compensation plans	0	0	0
Interest rate swap agreements	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	1,569	1,674	2,390
Interest rate swap agreements		0	0
Forward foreign currency exchange contracts	0	0	0
Total financial liabilities measured and reported at fair value	$ 1,569	$ 1,674	$ 2,390