Revenue from Contract with Customer (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 453,247	$ 376,348	$ 802,860	$ 691,748
Other operating sales and revenues	708	677	1,124	1,088
Sales and other operating revenues	453,955	377,025	803,984	692,836
Manufactured Product [Member] | Tobacco Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	370,702	334,545	640,966	609,687
Manufactured Product [Member] | Food Ingredient Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	52,517	19,127	104,405	35,483
Processing revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	16,048	12,474	32,744	28,774
Other sales and revenue from contracts with customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 13,980	$ 10,202	$ 24,745	$ 17,804