Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies- Earnings Per Share (Details)

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Summary of Significant Accounting Policies- Earnings Per Share (Details)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Common Stock
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Securities excluded from computation of earnings per share 775,588 893,511
Stock Options
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Securities excluded from computation of earnings per share 1,361,405 1,516,676