Note 4 - Property and Equipment, Net (Details) - Property and Equipment (USD $)	Nov. 30, 2013	Feb. 28, 2013
Property, Plant and Equipment [Line Items]
Property and Equipment	$ 18,491,247	$ 17,489,756
Less accumulated depreciation	11,240,189	10,712,613
Property and equipment, net	7,251,058	6,777,143
Land [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment	513,618	513,618
Building [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment	4,777,476	4,764,005
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment	9,815,703	8,864,126
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment	1,078,231	1,024,261
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment	1,911,711	1,930,991
Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment	$ 394,508	$ 392,755