Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 140,919	$ 100,819	$ 164,550
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	43,408	42,158	43,654
Amortization	1,708	1,708	1,618
Provisions for losses on advances and guaranteed loans to suppliers	1,623	11,930	18,666
Inventory write-downs	1,523	8,324	8,539
Share-based compensation expense	6,171	5,987	5,893
Foreign currency remeasurement loss (gain), net	(10,579)	2,253	(4,424)
Deferred income taxes	11,794	6,770	(1,044)
Equity in net income (loss) of unconsolidated affiliates, net of dividends	(4,966)	14,658	(3,731)
Gain on fire loss insurance settlement	0	9,592	0
Gain on sale of property in Brazil	0	(11,111)	0
Gain on assignment of farmer contracts and sale of related assets	0	0	(19,368)
Restructuring and impairment costs	4,113	11,661	21,504
Charge for (reversal of) European Commission fines in Italy and Spain	0	49,091	(7,445)
Other, net	(1,174)	1,719	2,381
Changes in operating assets and liabilities, net:
Accounts and notes receivable	(5,433)	(25,480)	(79,648)
Inventories and other assets	6,578	31,907	75,146
Income taxes	18,111	(1,535)	(3,631)
Accounts payable and accrued liabilities	11,167	(53,487)	(67,206)
Customer advances and deposits	9,503	12,006	(101,236)
Net cash provided by operating activities	234,466	199,786	54,218
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property, plant and equipment	(30,783)	(38,174)	(39,129)
Proceeds from assignment of farmer contracts and sale of related assets	0	0	34,946
Proceeds from sale of property, plant and equipment	3,534	18,366	5,575
Proceeds from fire loss insurance settlement	0	9,933	0
Other, net	1,004	0	260
Net cash (used) provided by investing activities	(26,245)	(9,875)	1,652
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of short-term debt, net	(18,374)	(17,388)	(39,350)
Issuance of long-term obligations	0	100,000	0
Repayment of long-term obligations	(16,250)	(96,250)	(15,000)
Dividends paid to noncontrolling interests	(1,957)	(103)	(100)
Issuance of common stock	3,949	134	0
Repurchase of common stock	(8,481)	(4,004)	(46,929)
Dividends paid on convertible perpetual preferred stock	(14,850)	(14,850)	(14,850)
Dividends paid on common stock	(45,996)	(44,711)	(45,321)
Proceeds from termination of interest rate swap agreements	0	13,388	0
Debt issuance costs and other	0	(3,539)	0
Net cash used by financing activities	(101,959)	(67,323)	(161,550)
Effect of exchange rate changes on cash	(97)	(1,896)	734
Net increase (decrease) in cash and cash equivalents	106,165	120,692	(104,946)
Cash and cash equivalents at beginning of year	261,699	141,007	245,953
Cash and cash equivalents at end of year	367,864	261,699	141,007
Supplemental information - cash paid for:
Interest	22,027	20,462	23,622
Income taxes, net of refunds	$ 35,913	$ 51,625	$ 79,724