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Note 2 - Earnings Per Common Share (Tables)
9 Months Ended
Sep. 30, 2014
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   

Three Months

    Nine Months  
   

Ended September 30,

    Ended September 30,   

(In thousands, except per share amounts)

 

2014

   

2013

   

2014

   

2013

 

Numerator:

                               

Net income

  $ 7,652     $ 7,977     $ 20,865     $ 22,846  
Denominator:                                

Basic earnings per common share - weighted-average shares

    33,403       33,226       33,371       33,206  

Effect of dilutive stock options

    289       249       301       183  

Diluted earnings per common share - weighted-average shares and assumed conversions

    33,692       33,475       33,672       33,389  
                                 

Basic earnings per common share

  $ 0.23     $ 0.24     $ 0.63     $ 0.69  

Diluted earnings per common share

  $ 0.23     $ 0.24     $ 0.62     $ 0.68