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6. Shareholders' Equity
 3 Months Ended
Jun. 30, 2012
Stockholders' Equity Note [Abstract]  
6. Shareholders' Equity

6.  Shareholders’ Equity

 

The following table summarizes the change in shareholders’ equity during the three and six months ended June 30, 2012 and 2011, respectively:

 

Three months ended June 30,

Six months ended June 30,

              2012 

              2011

              2012 

              2011

Balance at the beginning of the period

   $    40,168 

   $    32,607

   $    39,664 

   $    31,735

Net income during the period

               575 

            1,321

           1,028 

            2,133

Treasury stock purchased

               (92)

                     -

               (92)

                     -

Stock-based compensation

                 60 

                  44

               111 

                  83

Exercise of stock options

                 81 

               696

                 81 

               717

Balance at end of the period

   $    40,792 

   $    34,668

   $    40,792 

   $    34,668