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Earnings and Dividends per Share (Tables)
 9 Months Ended
Sep. 30, 2012
Earnings and Dividends per Share [Abstract]  
Computational components of basic and diluted earnings per share
                         
    For the three month period
ended September 30, 2012		  
    Numerator
(Income)		     Denominator
(Shares)		     Per Share
Amount		  

Basic net income and earnings per share

   $ 3,268       14,630     $ 0.22  

Effect of dilutive securities and notes:

                        

Common stock equivalents arising from stock options and employee stock purchase plan

     —         371       —    

Subordinated convertible promissory notes

     82       2,257       (0.03 ) 
   

 

 

    

 

 

    

 

 

  

Diluted earnings and earnings per share

   $ 3,350       17,258     $ 0.19  
   

 

 

    

 

 

    

 

 

  
   
    For the three month period
ended September 30, 2011		  
    Numerator
(Income)		     Denominator
(Shares)		     Per Share
Amount		  

Basic net income and earnings per share

   $ 2,319       14,372     $ 0.16  

Effect of dilutive securities and notes:

                        

Common stock equivalents arising from stock options and employee stock purchase plan

     —         163       —    

Subordinated convertible promissory notes

     95       2,622       (0.02 ) 
   

 

 

    

 

 

    

 

 

  

Diluted earnings and earnings per share

   $ 2,414       17,157     $ 0.14  
   

 

 

    

 

 

    

 

 

  
   
    For the nine month period
ended September 30, 2012		  
    Numerator
(Income)		     Denominator
(Shares)		     Per Share
Amount		  

Basic net income and earnings per share

   $ 7,798       14,591     $ 0.53  

Effect of dilutive securities and notes:

                        

Common stock equivalents arising from stock options and employee stock purchase plan

     —         290       —    

Subordinated convertible promissory notes

     250       2,318       (0.06 ) 
   

 

 

    

 

 

    

 

 

  

Diluted earnings and earnings per share

   $ 8,048       17,199     $ 0.47  
   

 

 

    

 

 

    

 

 

  
                         
    For the nine month period
ended September 30, 2011		  
    Numerator
(Income)		     Denominator
(Shares)		     Per Share
Amount		  

Basic net income and earnings per share

   $ 5,530       14,340     $ 0.39  

Effect of dilutive securities and notes:

                        

Common stock equivalents arising from stock options and employee stock purchase plan

     —         144       —    

Subordinated convertible promissory notes

     285       2,647       (0.05 ) 
   

 

 

    

 

 

    

 

 

  

Diluted earnings and earnings per share

   $ 5,815       17,131     $ 0.34  
   

 

 

    

 

 

    

 

 

  
Schedule of dividends payable
             

Dividend

Per share

  

Record

Date

  

Payment

Date

  

Payments

(dollars in thousands)
$0.035   March 20, 2012   March 30, 2012   $ 512
$0.035   June 15, 2012   June 29, 2012   $ 512
$0.045   September 14, 2012   September 28, 2012   $ 664