Short-Term Borrowing Arrangements (Details) - USD ($)	12 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Short-term Debt [Line Items]
Short-term debt	$ 475,863,000	$ 475,989,000
Unused lines of credit	387,621,000
Compensating balance	1,767,000	2,137,000
Line of Credit
Short-term Debt [Line Items]
Short-term debt, maximum outstanding amount	$ 808,695,000	$ 910,131,000
Short-term debt, weighted average interest rate	5.90%	5.20%
Short-term debt	$ 475,863,000	$ 475,989,000
Unused lines of credit	319,844,000	416,352,000
Inventory pledged as collateral	56,040,000	99,442,000
Compensating balance	1,767,000	2,137,000
Letter of Credit
Short-term Debt [Line Items]
Unused lines of credit	12,989,000	17,790,000
Non-US Based \| Line of Credit
Short-term Debt [Line Items]
Short-term debt	144,881,000	103,366,000
Mashonaland Tobacco Company, LTD \| Short Term Credit Facility
Short-term Debt [Line Items]
Short-term debt	130,600,000
Mashonaland Tobacco Company, LTD \| Short Term Credit Facility \| Intabex
Short-term Debt [Line Items]
Short-term debt	84,258,000
Unused lines of credit		15,742,000
Amount outstanding during period	$ 84,258,000	84,258,000
Fifth Amendment of Amended and Restated Credit Agreement \| Mashonaland Tobacco Company, LTD
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		$ 100,000,000

Inventory Pledged as Collateral

No definition available.

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- Definition

The amount of a specific compensating balance arrangement that is maintained under an agreement for a bank loan or future credit availability.

+ References

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- Definition

Maximum amount borrowed under the credit facility at any time during the period.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Weighted average interest rate of short-term debt outstanding.

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- Definition

For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, maximum month-end borrowings during the period.

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