Revenue from Contract with Customer (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 503,373	$ 634,074	$ 1,273,787	$ 1,546,590
Other operating sales and revenues	1,676	2,033	4,098	8,840
Sales and other operating revenues	505,049	636,107	1,277,885	1,555,430
Tobacco sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	475,574	600,848	1,193,062	1,455,617
Processing revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	20,112	23,143	55,247	62,244
Other sales and revenue from contracts with customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 7,687	$ 10,083	$ 25,478	$ 28,729