Note 9 - Deferred Financing Costs, Net (Details) - Deferred Financing Costs (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Feb. 28, 2013	Aug. 31, 2012	May 31, 2014	May 31, 2013
Note 9 - Deferred Financing Costs, Net (Details) - Deferred Financing Costs [Line Items]
Balance at beginning of period		$ 38,769	$ 39,449	$ 38,769
Debt issuance costs				11,412
Loss on extinguishment of debt	2,400	6,700		(9,111)
Amortization			(6,333)	(5,107)
Balance at end of period			33,116	39,449
Deferred Financing Costs [Member]
Note 9 - Deferred Financing Costs, Net (Details) - Deferred Financing Costs [Line Items]
Loss on extinguishment of debt	$ 1,700	$ 4,000		$ (5,625)