Quarterly report pursuant to Section 13 or 15(d)

Net Income Per Share (Details)

v2.4.0.6
Net Income Per Share (Details)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Dilutive effect of outstanding stock options and shares associated with long-term incentive compensation plans 9,785 36,571
Options [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Shares not included in the computation of diluted earnings per share 116,290  
Deferred Stock [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Shares not included in the computation of diluted earnings per share 323,236 149,470