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Computation of Earnings per Share (Detail Textuals)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Common stock equivalents
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive common stock Share purchase (in shares) 111,349      
Options
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive common stock Share purchase (in shares) 825,338 25,000 825,338 829,504