Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation and Employee Benefit Plans (Details 3)

v2.4.0.6
Share-Based Compensation and Employee Benefit Plans (Details 3) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2009
Weighted average assumptions used for determining fair value of options    
Increase (Decrease) in tax benefit from share-based compensation $ 47 $ (152)
Options
   
Weighted average assumptions used for determining fair value of options    
Weighted average fair value of grants on grant date (in dollars per share)   $ 10.15
Weighted average risk-free interest rate (as a percent)   2.20%
Weighted average expected life (in years)   5.32
Weighted average expected volatility (as a percent)   47.71%
Expected dividend yield (as a percent)   3.77%
Risk-free interest rate, minimum (as a percent)   2.08%
Risk-free interest rate, maximum (as a percent)   2.70%
Expected volatility, minimum (as a percent)   47.60%
Expected volatility, maximum (as a percent)   48.17%
Options | Minimum
   
Weighted average assumptions used for determining fair value of options    
Expected dividend yield (as a percent)   3.73%
Options | Maximum
   
Weighted average assumptions used for determining fair value of options    
Expected dividend yield (as a percent)   3.93%