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Earnings Per Common Share (Details)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Weighted Average Number Diluted Shares Outstanding Adjustment [Abstract]    
Weighted Average Number of Shares Outstanding, Diluted, Total 802,410 855,009
Antidilutive Shares Outstanding    
Weighted Average Number of Shares Outstanding, Antidilutive, Total 141,621 152,059