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Stock-based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] | The fair value of each option grant was estimated on the date of the grant using the Black-Scholes option pricing model with the following assumptions:
|  | 2012 |  | 2011 |
Risk-free interest rate |  | 1.25% - 1.47% |  | 1.49% - 2.90% |
Expected life (years) |  | 4.75 |  | 4.75 – 6.80 |
Expected volatility |  | 133% - 135% |  | 262% - 323% |
Expected dividend yield |  | Zero |  | Zero |
Expected forfeitures |  | Zero |  | Zero |
Disclosure of Share-based Payment Awards [Table Text Block] | The following summarizes the changes in common stock options for the years ended December 31, 2012 and 2011:
|  | 2012 |  |  | 2011 |
|  | Options |  |  | Weighted Average Exercise Price |  |  | Options |  |  | Weighted Average Exercise Price |
Outstanding at beginning of year |  |  | 3,141,198 |  |  | $ | 1.65 |  |  |  | 728,246 |  |  | $ | 0.89 |
Granted |  |  | 1,040,000 |  |  | $ | 2.04 |  |  |  | 2,520,000 |  |  | $ | 1.88 |
Exercised |  |  | (31,750 | ) |  | $ | 0.61 |  |  |  | (50,000 | ) |  | $ | 0.90 |
Expired |  |  | (1,250 | ) |  | $ | 1.40 |  |  |  | (57,048 | ) |  | $ | 2.73 |
Forfeited |  |  | (250,000 | ) |  | $ | 1.83 |  |  |  | — |  |  | $ | — |
Outstanding at end of year |  |  | 3,898,198 |  |  | $ | 1.75 |  |  |  | 3,141,198 |  |  | $ | 1.65 |
Options exercisable at year end |  |  | 1,298,198 |  |  | $ | 1.39 |  |  |  | 791,198 |  |  | $ | 1.08 |
Weighted-average fair value of options granted during the year |  |  |  |  |  | $ | 1.75 |  |  |  |  |  |  | $ | 0.93 |
Schedule of Nonvested Option Activity [Table Text Block] | The following summarizes the changes in unvested common stock options for the years ending December 31, 2012 and 2011:
|  | Options |  |  | Weighted Average Grant Date Fair Value |
Unvested at December 31, 2011 |  |  | 2,350,000 |  |  | $ | 0.83 |
Granted |  |  | 1,040,000 |  |  | $ | 1.75 |
Vested |  |  | (540,000 | ) |  | $ | 0.87 |
Forfeited |  |  | (250,000 | ) |  | $ | 0.20 |
Unvested at December 31, 2012 |  |  | 2,600,000 |  |  | $ | 1.23 |
|  | Options |  |  | Weighted Average Grant Date Fair Value |
Unvested at December 31, 2010 |  |  | 97,500 |  |  | $ | 0.29 |
Granted |  |  | 2,520,000 |  |  | $ | 0.93 |
Vested |  |  | (267,500 | ) |  | $ | 1.77 |
Unvested at December 31, 2011 |  |  | 2,350,000 |  |  | $ | 0.83
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] | The following table summarizes information about all stock options outstanding at December 31, 2012:
Exercise price |  | Options Outstanding |  |  | Weighted Average Remaining Life (years) |  |  | Weighted Average Exercise Price |  |  | Number Exercisable |  |  | Weighted Average Remaining Life (years) |  |  | Weighted Average Exercise Price |
$ 0.08 to $ 0.15 |  |  | 80,000 |  |  |  | 3.75 |  |  | $ | 0.12 |  |  |  | 50,000 |  |  |  | 3.65 |  |  | $ | 0.12 |
$ 0.51 to $ 1.11 |  |  | 545,000 |  |  |  | 1.07 |  |  | $ | 0.82 |  |  |  | 515,000 |  |  |  | 0.82 |  |  | $ | 0.81 |
$ 1.83 to $ 1.97 |  |  | 2,130,000 |  |  |  | 7.00 |  |  | $ | 1.87 |  |  |  | 705,000 |  |  |  | 6.63 |  |  | $ | 1.86 |
$ 2.00 to $ 2.40 |  |  | 1,143,198 |  |  |  | 6.13 |  |  | $ | 2.07 |  |  |  | 28,198 |  |  |  | 5.08 |  |  | $ | 2.40 |
|  |  | 3,898,198 |  |  |  | 5.85 |  |  | $ | 1.75 |  |  |  | 1,298,198 |  |  |  | 4.18 |  |  | $ | 1.39 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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