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Note 10 - Stock-Based Compensation Plans (Tables)
6 Months Ended
Jun. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
   

2013

   

2012

 

Fair value of each option granted

  $ 5.56     $ 5.15  

Volatility

    41 %     41 %

Expected option lives (years)

 

8

   

7

 

Risk-free interest rate

    1.60 %     1.53 %

Dividend yield

    3.69 %     3.97 %
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

(In Thousands)

 

3 Months Ended

   

6 Months Ended

 
   

June 30,

2013

   

June 30,

2012

   

June 30,

2013

   

June 30,

2012

 

Stock options

  $ 96     $ 88     $ 262     $ 247  

Restricted stock

    109       82       230       164  

Total

  $ 205     $ 170     $ 492     $ 411