Note 1. Nature of Business and Summary of Significant Accounting Policies (Detail) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended				12 Months Ended	9 Months Ended	12 Months Ended
	Aug. 19, 2011	May 31, 2012	May 31, 2011	May 31, 2010	May 31, 2009	Aug. 19, 2011 Predecessor [Member]	May 31, 2011 Accounts Receivable [Member] Foreign Countries [Member]	May 31, 2012 Foreign Sales [Member]	May 31, 2012 United States [Member]	May 31, 2011 United States [Member]	May 31, 2012 Minimum [Member]	May 31, 2012 Maximum [Member]
Additional Paid in Capital		$ 706,986,000	$ 45,729,000			$ 0
Cash and Cash Equivalents, at Carrying Value	322,963,000	18,578,000	302,603,000	202,649,000	136,461,000
Concentration Risk, Percentage	30.00%		30.00%	30.00%			58.00%	30.00%	43.00%	83.00%
Accounts Receivable, Net		66,400,000	63,300,000
General and Administrative Costs in Inventory, Amount Incurred	900,000	3,200,000	2,800,000	3,300,000
General and Administrative Costs in Inventory, Amount Remaining		1,100,000	900,000
Inventory Adjustments	24,400,000	0	0	0
Property, Plant and Equipment, Useful Life											3 years	30 years
Temporary Equity, Foreign Currency Translation Adjustments	2,200,000	18,400,000	13,900,000	5,200,000
Foreign Currency Transaction Gain (Loss), Realized	2,700,000	400,000	300,000	400,000
Shipping, Handling and Transportation Costs	3,952,000	14,333,000	16,508,000	14,831,000
Allowance for Doubtful Accounts Receivable		600,000	2,200,000
Marketing and Advertising Expense	$ 100,000	$ 200,000	$ 500,000	$ 600,000