Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019
Assets:
Money market funds	$ 1,991	$ 4,011	$ 2,032
Trading securities associated with deferred compensation plans	14,495	12,635	16,100
Forward foreign currency exchange contracts	291	314	45
Total financial assets measured and reported at fair value	16,777	16,960	18,177
Liabilities:
Guarantees of bank loans to tobacco growers	0	103	137
Business Combination, Contingent Consideration, Liability, Current		4,173
Business Combination, Contingent Consideration, Liability, Noncurrent	2,532	2,532
Interest Rate Derivative Liabilities, at Fair Value	37,109	37,163	21,381
Forward foreign currency exchange contracts	1,400	15,842	1,293
Total financial liabilities measured and reported at fair value	41,041	59,813	22,811
Net Asset Value [Member]
Assets:
Money market funds	1,991	4,011	2,032
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	1,991	4,011	2,032
Liabilities:
Guarantees of bank loans to tobacco growers		0	0
Business Combination, Contingent Consideration, Liability, Current		0
Business Combination, Contingent Consideration, Liability, Noncurrent	0	0
Interest Rate Derivative Liabilities, at Fair Value	0	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	14,495	12,635	16,100
Forward foreign currency exchange contracts	0	0	0
Total financial assets measured and reported at fair value	14,495	12,635	16,100
Liabilities:
Guarantees of bank loans to tobacco growers		0	0
Business Combination, Contingent Consideration, Liability, Current		0
Business Combination, Contingent Consideration, Liability, Noncurrent	0	0
Interest Rate Derivative Liabilities, at Fair Value	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	0	0	0
Trading securities associated with deferred compensation plans	0	0	0
Forward foreign currency exchange contracts	291	314	45
Total financial assets measured and reported at fair value	291	314	45
Liabilities:
Guarantees of bank loans to tobacco growers		0	0
Business Combination, Contingent Consideration, Liability, Current		0
Business Combination, Contingent Consideration, Liability, Noncurrent	0	0
Interest Rate Derivative Liabilities, at Fair Value	37,109	37,163	21,381
Forward foreign currency exchange contracts	1,400	15,842	1,293
Total financial liabilities measured and reported at fair value	38,509	53,005	22,674
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		103	137
Business Combination, Contingent Consideration, Liability, Current		4,173
Business Combination, Contingent Consideration, Liability, Noncurrent	2,532	2,532
Interest Rate Derivative Liabilities, at Fair Value	0	0	0
Forward foreign currency exchange contracts	0	0	0
Total financial liabilities measured and reported at fair value	$ 2,532	$ 6,808	$ 137