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Earnings Per Common Share - Additional Information (Detail)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Earnings Per Share [Abstract]        
Potential common shares that would have a dilutive effect     0  
Average number of common shares outstanding basic and diluted 4,901,599 4,901,464 4,901,532 4,901,464