Revenue from Contract with Customer (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 349,613	$ 315,400
Other operating sales and revenues	416	411
Sales and other operating revenues	350,029	315,811
Manufactured Product [Member] | Tobacco Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	270,264	275,142
Manufactured Product [Member] | Food Ingredient Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	51,888	16,356
Processing revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	16,696	16,300
Other sales and revenue from contracts with customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 10,765	$ 7,602