XML 19 R50.htm IDEA: XBRL DOCUMENT v3.2.0.727
Share-Based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Stock option activity    
Options outstanding (in shares) 368,360  
Options exercised (in shares) (5,500)  
Options cancelled (in shares) (3,260)  
Options outstanding (in shares) 359,600  
Options vested or expected to vest (in shares) 355,839  
Options exercisable (in shares) 296,220  
Stock option activity, weighted average exercise price    
Options Outstanding, weighted average exercise price (in dollars per share) $ 8.89  
Options exercised, weighted average exercise price (in dollars per share) 6.60  
Options canceled, weighted average exercise price (in dollars per share) 7.15  
Options Outstanding, weighted average exercise price (in dollars per share) 8.94  
Options vested or expected to vest, weighted average exercise price (in dollars per share) 8.96  
Options exercisable, weighted average exercise price (in dollars per share) $ 9.25  
Options outstanding, weighted average remaining contractual term 3 years 1 month 25 days  
Options vested or expected to vest, weighted average remaining contractual term 3 years 1 month 10 days  
Options exercisable, weighted average remaining contractual term 2 years 4 months 15 days  
Options outstanding, aggregate intrinsic value $ 1,227  
Options vested or expected to vest, aggregate intrinsic value 1,211  
Options exercisable, aggregate intrinsic value 955  
Intrinsic value of options exercised 25 $ 24
Cash received from options exercised 36 25
Excess tax benefit realized for options exercises $ 4 $ 6