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Summary of Significant Accounting Policies (Details) - shares
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Net Income (Loss) Per Common Share    
Weighted average number of shares outstanding 3,833,056 3,027,345
Effect of dilutive stock options 111,294 116,231
Diluted number of shares outstanding 3,944,350 3,143,576
Outstanding stock options not included in the calculation because the effect would be anti-dilutive 14,000 4,000