Revenue from Contract with Customer (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 664,578	$ 503,373	$ 1,356,326	$ 1,273,787
Other operating sales and revenues	8,353	1,676	9,441	4,098
Sales and other operating revenues	672,931	505,049	1,365,767	1,277,885
Manufactured Product [Member] | Tobacco Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	583,543	475,574	1,193,230	1,193,062
Manufactured Product [Member] | Food Ingredient Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	47,337	1,064	82,820	2,705
Processing revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	18,831	20,112	47,605	55,247
Other sales and revenue from contracts with customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 14,867	$ 6,623	$ 32,671	$ 22,773