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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Feb. 28, 2014
Summary of Significant Accounting Policies [Abstract]  
Summary of available-for-sale investments

 
February 28, 2014
  
Cost
 
Gross Unrealized Gains
  
Gross Unrealized Losses
  
Fair Value
  
(In thousands)
Short-term investments:
  
Treasury bills
 $1,282  $0.49  $-  $1,282 
Certificates of deposit
   4,978   0.51   -    4,979 
Total short-term investments
 $6,260  $1  $-  $6,261 
                 
  
February 28, 2013
  
Cost
 
Gross Unrealized Gains
  
Gross Unrealized Losses
  
Fair Value
  
(In thousands)
Short-term investments:
  
Treasury bills
 $1,225  $-  $-  $1,225 
Certificates of deposit
  3,935   13   -   3,948 
Total short-term investments
 $5,160  $13  $-  $5,173 
 
Contractual maturities of available-for-sale non-equity investments

  
Cost
 
Fair Value
  
(In thousands)
Maturing within one year
 
$
6,260
  
$
6,261
 
 
Summary of estimated useful lives of assets

     Leasehold Improvements
10 years
     Machinery and Equipment
5 years