| Schedule of Loss Per Common Share, Basic and Diluted |
Basic and diluted loss per share for the three and six month periods ended June 30, 2013 and 2012, respectively, were as follows: | | | Three Months Ended | | Six Months Ended | | | | | June 30
2013 | | June 30
2012 | | June 30,
2013 | | June 30,
2012 | | | Loss available to stockholders | | $ | (1,090,480) | | $ | (396,973) | | $ | (1,950,873) | | $ | (835,286) | | | | | | | | | | | | | | | | | | Weighted average shares outstanding - Basic and diluted | | | 13,205,476 | | | 13,114,604 | | | 13,209,165 | | | 13,064,879 | | | Basic and diluted loss per share | | $ | (0.08) | | $ | (0.03) | | $ | (0.15) | | $ | (0.06) | | | | | | | | | | | | | | | | | | Anti-dilutive shares underlying stock options outstanding | | | 1,134,000 | | | 1,095,250 | | | 1,134,000 | | | 1,095,250 | | | Anti-dilutive convertible debentures | | | 75,806 | | | 159,139 | | | 75,806 | | | 159,139 | |
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Basic and diluted earnings per share for the years ended December 31, 2012, 2011, and 2010, respectively, were as follows: | | | 2012 | | 2011 | | 2010 | | | Loss available to stockholders | | $ | (1,636,957) | | $ | (1,574,501) | | $ | (355,308) | | | | | | | | | | | | | | | Weighted average shares outstanding - Basic and diluted | | | 13,135,072 | | | 12,052,914 | | | 11,470,658 | | | Basic and diluted loss per share | | $ | (0.12) | | $ | (0.13) | | $ | (0.03) | | | | | | | | | | | | | | | Anti-dilutive shares underlying stock options outstanding | | | 1,096,500 | | | 1,095,250 | | | 620,000 | | | Anti-dilutive shares underlying convertible debentures | | | 75,806 | | | 159,140 | | | 159,140 | |
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