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Condensed Consolidated Statements of Income Condensed Consolidated Statements of Income (Parenthetical) - shares
shares in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Stock Dividend 2.50%  
Average Common Shares Outstanding [1] 16,538 16,424
Scenario, Previously Reported [Member]    
Average Common Shares Outstanding   16,023
[1] (A)Adjusted for the declaration of a 2.5% stock dividend in 2015, shares related to which were issued in February 2016. Prior to the adjustment, the average common shares outstanding were 16,023 for the three months ended March 31, 2015.