Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Assets:
Money market funds	$ 380	$ 4,011	$ 4,003
Trading securities associated with deferred compensation plans	15,703	12,635	16,410
Forward foreign currency exchange contracts	7,313	314	1,789
Total financial assets measured and reported at fair value	23,396	16,960	22,202
Liabilities:
Guarantees of bank loans to tobacco growers	0	103	131
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	33,950	37,163	15,978
Forward foreign currency exchange contracts	1,235	15,842	1,211
Total financial liabilities measured and reported at fair value	37,717	59,813	17,320
Net Asset Value [Member]
Assets:
Money market funds	380	4,011	4,003
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	380	4,011	4,003
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	15,703	12,635	16,410
Forward foreign currency exchange contracts	0	0	0
Total financial assets measured and reported at fair value	15,703	12,635	16,410
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	7,313	314	1,789
Total financial assets measured and reported at fair value	7,313	314	1,789
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	33,950	37,163	15,978
Forward foreign currency exchange contracts	1,235	15,842	1,211
Total financial liabilities measured and reported at fair value	35,185	53,005	17,189
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	131
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	$ 131