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Summary of Significant Accounting Policies (Details 6) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2012
Nov. 30, 2011
Continuing operations        
Indefinite-lived intangible assets       $ 10,971   
Discontinuing operations        
Long-lived tangible assets       737   
Total impairment loss       $ 10,971