v2.4.0.6
Net Income Per Share Attributable to Common Stockholders (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Numerator [Abstract]        
Net income $ 1,667 $ 452 $ 1,105 $ 2,605
Net income attributable to participating securities (1,252) (350) (841) (2,029)
Net income attributable to common stockholders - basic 415 102 264 576
Undistributed earnings allocated to participating securities 1,249 349 839 2,026
Net income available to common stockholders - diluted $ 1,664 $ 451 $ 1,103 $ 2,602
Denominator [Abstract]        
Weighted - average shares used in computing net income per share attributable to common stockholders - basic (in shares) 5,843 5,137 5,540 5,002
Dilutive Securities, Effect on Basic Earnings Per Share [Abstract]        
Convertible Preferred Stock (in shares) 17,597 17,597 17,597 17,588
Common Stock Options (in shares) 3,105 1,656 2,829 1,604
Warrants (in shares) 0 0 0 2
Contingently Issuable Shares Related to an Acquisition (in shares) 0 12 6 12
Weighted - Average Shares Used in Computing Net Income Per Share Attributable to Common Stockholders - Diluted (in shares) 26,545 24,402 25,972 24,208
Basic (usd per share) $ 0.07 $ 0.02 $ 0.05 $ 0.12
Diluted (usd per share) $ 0.06 $ 0.02 $ 0.04 $ 0.11
Common Stock Options (in shares) 1,108 2,806 1,031 2,828