Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018
Assets:
Money market funds	$ 77,229	$ 156,864	$ 1,700
Trading securities associated with deferred compensation plans	16,356	16,315	16,910
Interest rate swap agreements			9,527
Forward foreign currency exchange contracts	2,864	540	10
Total financial assets measured and reported at fair value	96,449	173,719	28,147
Liabilities:
Guarantees of bank loans to tobacco growers	785	803	1,201
Interest Rate Derivative Liabilities, at Fair Value	16,158	6,351
Forward foreign currency exchange contracts	65	386	1,491
Total financial liabilities measured and reported at fair value	17,008	7,540	2,692
Net Asset Value [Member]
Assets:
Money market funds	77,229	156,864	1,700
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	77,229	156,864	1,700
Liabilities:
Guarantees of bank loans to tobacco growers	0	0	0
Interest Rate Derivative Liabilities, at Fair Value	0	0
Forward foreign currency exchange contracts	0	0	0
Total financial liabilities measured and reported at fair value	0	0	0
Level 1 [Member]
Assets:
Money market funds	0	0	0
Trading securities associated with deferred compensation plans	16,356	16,315	16,910
Interest rate swap agreements			0
Forward foreign currency exchange contracts	0	0	0
Total financial assets measured and reported at fair value	16,356	16,315	16,910
Liabilities:
Guarantees of bank loans to tobacco growers	0	0	0
Interest Rate Derivative Liabilities, at Fair Value	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	0	0	0
Trading securities associated with deferred compensation plans	0	0	0
Interest rate swap agreements			9,527
Forward foreign currency exchange contracts	2,864	540	10
Total financial assets measured and reported at fair value	2,864	540	9,537
Liabilities:
Guarantees of bank loans to tobacco growers	0	0	0
Interest Rate Derivative Liabilities, at Fair Value	16,158	6,351
Forward foreign currency exchange contracts	65	386	1,491
Total financial liabilities measured and reported at fair value	16,223	6,737	1,491
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	785	803	1,201
Interest Rate Derivative Liabilities, at Fair Value	0	0
Forward foreign currency exchange contracts	0	0	0
Total financial liabilities measured and reported at fair value	$ 785	$ 803	$ 1,201