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Loss per common share - Schedule of Loss Per Common Share, Basic and Diluted (Details) (USD $)
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3 Months Ended | 6 Months Ended | 12 Months Ended | ||||
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||||||
| Loss available to stockholders (in dollars) | $ (1,090,480) | $ (396,973) | $ (1,950,873) | $ (835,286) | $ (1,636,957) | $ (1,574,501) | $ (355,308) |
| Weighted average shares outstanding - Basic and diluted (in shares) | 13,205,476 | 13,114,604 | 13,209,165 | 13,064,879 | 13,135,071 | 12,052,914 | 11,470,658 |
| Basic and diluted loss per share (in dollars per share) | $ (0.08) | $ (0.03) | $ (0.15) | $ (0.06) | $ (0.12) | $ (0.13) | $ (0.03) |
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Stock Option
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| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||||||
| Antidilutive securities (in shares) | 1,134,000 | 1,095,250 | 1,134,000 | 1,095,250 | 1,096,500 | 1,095,250 | 620,000 |
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Convertible Debenture
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| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||||||
| Antidilutive securities (in shares) | 75,806 | 159,139 | 75,806 | 159,139 | 75,806 | 159,140 | 159,140 |
| X | ||||||||||
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- Definition
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. No definition available.
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS). No definition available.
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