Annual report pursuant to Section 13 and 15(d)

Significant Customers and Concentration of Credit Risk (Details Textual)

v2.4.0.6
Significant Customers and Concentration of Credit Risk (Details Textual) (Customer Concentration Risk [Member])
12 Months Ended
Feb. 28, 2013
Feb. 29, 2012
Feb. 28, 2011
Concentration Risk [Line Items]      
Concentration Risk, Additional Characteristic 10% or more of the Company's sales 10% or more of the Company's sales 10% or more of the Company's sales
Sales Revenue, Goods, Net [Member]
     
Concentration Risk [Line Items]      
Concentration Risk, Additional Characteristic five largest customers five largest customers five largest customers
Concentration Risk, Percentage 57.80% 61.00% 41.70%