XML 34 R23.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock Incentive Plans and Stock-Based Compensation (Details) (USD $)
 6 Months Ended
Jun. 30, 2012
Summary of stock option activity  
Outstanding, Number of Options at December 31, 2011 671,294
Outstanding, Exercise Price at December 31, 2011 $ 14.48
Options granted 7,500
Options granted, Weighted Average Exercise Price $ 17.55
Options exercised (118,472)
Options exercised, Weighted Average Exercise Price $ 14.26
Options cancelled or expired 0
Options cancelled or expired, Weighted Average Exercise Price   
Outstanding, Number of Options at June 30, 2012 560,322
Outstanding, Exercise Price at June 30, 2012 $ 14.57
Exercisable, Number of Options at June 30, 2012 252,797
Exercisable, Exercise Price at June 30, 2012 $ 13.49
Available for grant at June 30, 2012 626,300