Operating Segments (Operating Results For The Company's Reportable Segments) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Sales and other operating revenues		$ 539,604	$ 488,248	$ 919,323	$ 772,870
Deduct: Equity in pretax (earnings) loss of unconsolidated affiliates (3)	[1]	614	(667)	75	(232)
Consolidated operating income		54,370	44,805	62,739	51,182
Flue-Cured And Burley Leaf Tobacco Operations [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues		465,869	439,832	789,357	677,568
Consolidated operating income		53,858	45,252	60,793	51,526
Flue-Cured And Burley Leaf Tobacco Operations [Member] | North America [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues		67,782	58,668	183,338	111,992
Consolidated operating income		8,296	7,866	17,248	10,196
Flue-Cured And Burley Leaf Tobacco Operations [Member] | Other Regions [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	[2]	398,087	381,164	606,019	565,576
Consolidated operating income	[2]	45,562	37,386	43,545	41,330
Operating Segments [Member]
Segment Reporting Information [Line Items]
Consolidated operating income		53,756	45,472	62,664	51,414
Other Tobacco Operations [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	[3]	73,735	48,416	129,966	95,302
Consolidated operating income	[3]	$ (102)	$ 220	$ 1,871	$ (112)

[1] Equity in pretax earnings (loss) of unconsolidated affiliates is included in segment operating income (Other Tobacco Operations segment), but is reported below consolidated operating income and excluded from that total in the consolidated statements of income and comprehensive income

[2] Includes South America, Africa, Europe, and Asia regions, as well as inter-region eliminations.

[3] Includes Dark Air-Cured, Special Services, and Oriental, as well as inter-company eliminations. Sales and other operating revenues for this reportable segment include limited amounts for Oriental because the business is accounted for on the equity method and its financial results consist principally of equity in the pretax earnings (loss) of an unconsolidated affiliate.