Note 18 - Income Taxes (Details) - Effective Tax Rate	3 Months Ended	9 Months Ended	12 Months Ended
	Aug. 19, 2011	May 31, 2012	May 31, 2014	May 31, 2013
Effective Tax Rate [Abstract]
Federal statutory tax rate	35.00%	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit	1.50%	1.50%	0.80%	3.70%
Foreign taxes	(37.20%)	(0.90%)	(0.10%)	(0.90%)
Incremental U.S. benefit related to foreign dividends	(9.80%)	3.50%	0.40%	0.80%
Tax Credits	3.10%	0.40%	0.20%	1.90%
Permanent items	(66.70%)	(0.20%)	(0.30%)	(1.30%)
Impairment of Goodwill			(28.30%)
Acquistion-related items			0.80%
Change in analysis of uncertain income tax positions	1.50%	(0.30%)	(0.10%)	0.90%
Valuation Allowance			(0.40%)	(1.50%)
Other		(0.10%)
Effective tax rate	(72.60%)	38.90%	8.00%	38.60%