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Intangible Assets (Details 2) (USD $)
In Thousands, unless otherwise specified
Feb. 28, 2013
Feb. 29, 2012
Feb. 28, 2011
Amortization of trademarks, customer relationships and completed technologies      
2014 $ 162    
2015 135    
2016 135    
2017 102    
Total $ 534 $ 705 $ 875