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Note 13 - Share-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
   

No. of

Shares

   

Weighted Average

Exercise Price

 

Outstanding December 31, 2011

    671,500     $ 10.66  

Granted

    194,223       12.62  

Exercised

    (138,252 )     9.32  

Lapsed

    (86,400 )     12.57  

Cancelled

    (26,154 )     12.37  

Outstanding December 31, 2012

    614,917     $ 11.24  

Granted

    202,884       11.43  

Exercised

    (206,441 )     10.73  

Lapsed

    (31,150 )     10.68  

Cancelled

    (23,181 )     11.67  

Outstanding December 31, 2013

    557,029     $ 11.51  
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

Range of

Exercise Price

   

Shares

   

Weighted Average Remaining

Contractual Life (Years)

   

Weighted Average

Exercise Price

 
$7.63 - $9.80       97,094       2.28     $ 9.45  
$11.10 - $13.15       449,935       3.57     $ 11.86  
  $16.00         10,000       0.33     $ 16.00  
$7.63  - $16.00       557,029       3.29     $ 11.51  
Schedule of Share-based Compensation, Stock Appreciation Rights Award Activity [Table Text Block]
   

No. of

Shares

   

Weighted Average

Exercise Price

 

Outstanding December 31, 2011

    257,424     $ 11.32  

Granted

    65,752       13.15  

Exercised

    (134,304 )     11.67  

Lapsed

    -       -  

Cancelled

    (12,396 )     13.15  

Outstanding December 31, 2012

    176,476     $ 11.60  

Granted

    59,716       11.29  

Exercised

    (9,786 )     11.73  

Lapsed

    -       -  

Cancelled

    -       -  

Outstanding December 31, 2013

    226,406     $ 11.52  
Schedule of Share-based Compensation, Activity [Table Text Block]

Range of

Exercise Price

   

SARS

   

Weighted Average Remaining

Contractual Life (Years)

   

Weighted Average

Exercise Price

 
  $9.80         26,184       1.08     $ 9.80  
$11.24 - $13.15       200,222       2.89     $ 11.74  
$9.80 - $13.15       226,406       2.68     $ 11.52  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used
   

SARS

   

Options

Exercise price

                 

2013

  $ 11.29       $11.29  - $11.76

2012

  $ 13.15       $11.72  - $13.15
                   

Market price

                 

2013

  $ 11.29       $11.29 - $11.76

2012

  $ 13.15       $11.72 - $13.15
                   

Risk free interest rate (1)

                 

2013

    0.9 %     0.9% - 1.7%

2012

    0.8 %     0.7% - 1.9%
                   
Expected award life (years) (2)     5       5 - 10
                   

Expected volatility (3)

                 

2013

    46.0 %     36.7% - 46.0%

2012

    45.1 %     36.4% - 45.9%
                   

Expected dividend yield (4)

                 

2013

    4.8 %     4.6% - 4.8%

2012

    4.1 %     4.1% - 4.6%