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Note 4 - Earnings Per Share (Tables)
3 Months Ended
Dec. 31, 2012
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]
   
Three months ended December 31,
 
   
2012
   
2011
 
Numerators:
           
Net income
  $ 2,977     $ 9,703  
                 
Denominators:
               
Average shares outstanding – basic
    34,355       34,368  
Impact of stock options
    57       23  
Average shares outstanding – diluted
    34,412       34,391  
                 
Basic income per share
  $ 0.09     $ 0.28  
Diluted income per share
  $ 0.09     $ 0.28