Note 4 - Property and Equipment, Net (Details) - Property and Equipment (USD $)	3 Months Ended
	Aug. 31, 2014	Feb. 28, 2014
Property, Plant and Equipment [Line Items]
Property, plant, and equpment	$ 18,990,774	$ 19,984,989
Less accumulated depreciation	11,922,121	11,496,791
Property and equipment, net	7,068,653	8,488,198
Impairment provision of long-lived assets	(243,000)
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equpment	513,618	513,618
Building [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equpment	4,775,466	4,775,466
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equpment	10,311,135	9,518,832
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equpment	1,190,809	1,324,846
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equpment	2,017,738	2,489,782
Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equpment	425,008	394,508
Asset under Construction [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equpment		$ 967,937