Note 16 - Income Taxes (Details) (USD $)	12 Months Ended
	Aug. 31, 2014	Dec. 31, 2013	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2011
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	26.70%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount		$ 7,200,000
Unrecognized Tax Benefits	5,501,000		5,435,000	5,464,000	7,204,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	1,100,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 900,000