Quarterly report pursuant to Section 13 or 15(d)

Net Income Per Share (Details)

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Net Income Per Share (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
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 23,118 3,596 23,297 6,132
Options [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Shares not included in the computation of diluted earnings per share 202,897 106,746 202,897 106,746
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 171,544 273,571 171,544 273,571