CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2012		Aug. 31, 2011
Cash Flows From Operating Activities:
Net income	$ 30,619	[1]	$ 83,340
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	13,330	[1]	13,009
Amortization	6,735	[1]	5,110
Impairment on investment in Kemrock	40,273	[1]
Estimated Loss Contingency	11,418	[1]
Deferred income taxes	(2,296)	[1]	(1,374)
Stock-based compensation expense	3,873	[1]	3,125
Other	(442)	[1]	(83)
Changes in assets and liabilities, net of effect from purchases and sales of businesses:
Decrease (increase) in receivables	7,162	[1]	(4,211)
(Increase) in inventory	(24,650)	[1]	(27,113)
Decrease (increase) in prepaid expenses and other current and long-term assets	554	[1]	(6,370)
(Decrease) in accounts payable	(54,226)	[1]	(27,069)
(Decrease) in accrued compensation and benefits	(56,362)	[1]	(45,873)
(Decrease) in accrued loss reserves	(118)	[1]	(2,622)
Increase in other accrued liabilities	53,198	[1]	14,818
Other	(11,334)	[1]	2,789
Cash From Operating Activities	17,734	[1]	7,476
Cash Flows From Investing Activities:
Capital expenditures	(12,702)	[1]	(4,913)
Acquisition of businesses, net of cash acquired	(141,203)	[1]	(35,914)
Purchase of marketable securities	(55,744)	[1]	(11,315)
Proceeds from sales of marketable securities	49,320	[1]	13,821
Other	17,255	[1]	915
Cash (Used For) Investing Activities	(143,074)	[1]	(37,406)
Cash Flows From Financing Activities:
Additions to long-term and short-term debt	147,547	[1]	7,391
Reductions of long-term and short-term debt	(63,193)	[1]	(10,824)
Cash dividends	(28,281)	[1]	(27,424)
Repurchase of stock	(260)	[1]	(204)
Exercise of stock options	803	[1]	1,205
Cash From (Used For) Financing Activities	56,616	[1]	(29,856)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	10,138	[1]	(1,870)
Net Change in Cash and Cash Equivalents	(58,586)	[1]	(61,656)
Cash and Cash Equivalents at Beginning of Period	315,968	[1]	435,011
Cash and Cash Equivalents at End of Period	$ 257,382	[1]	$ 373,355

[1] Restated