Note 19 - Subsequent Events (Detail) (USD $)					0 Months Ended
	Feb. 19, 2013	Jan. 03, 2013	May 31, 2012	Aug. 19, 2011	Mar. 22, 2013 Subsequent Event [Member]
Business Acquisition, Cost of Acquired Entity, Cash Paid				$ 301,053,000	$ 87,300,000
Business Acquisition, Cost of Acquired Entity, Liabilities Incurred	50,000,000	50,000,000			50,000,000
Proceeds from Contributed Capital					42,500,000
Line of Credit Facility, Increase, Additional Borrowings					5,200,000
Business Acquisition, Cost of Acquired Entity, Transaction Costs			2,000,000	88,259,000	3,700,000
Business Acquisition, Contingent Consideration, Potential Cash Payment					$ 10,000,000