XML 71 R35.htm IDEA: XBRL DOCUMENT v2.4.0.8
Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Basic earnings per share          
Income available to common stockholders plus assumed exercise of options to purchase common stock, Net Income $ 6,656 $ 6,620 $ 13,584 $ 11,742 $ 25,367
Income available to common stockholders, Shares 12,584,942 12,452,112 12,543,888 10,894,419  
Income available to common stockholders, Per Share $ 0.53 $ 0.53 $ 1.08 $ 1.08  
Effect of dilutive securities          
Options to purchase common stock, Shares 296,175 282,976 287,152 281,373  
Diluted earnings per share          
Income available to common stockholders plus assumed exercise of options to purchase common stock, Net Income $ 6,656 $ 6,620 $ 13,584 $ 11,742 $ 25,367
Income available to common stockholders plus assumed exercise of options to purchase common stock, Shares 12,881,117 12,735,088 12,831,040 11,175,792  
Income available to common stockholders plus assumed exercise of options to purchase common stock, Per Share $ 0.52 $ 0.52 $ 1.06 $ 1.05