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Stock Options (Tables) | 12 Months Ended
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Dec. 31, 2013
Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract] |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block] | The fair value of stock options is estimated on the date of grant using the Black-Scholes option pricing model. The weighted average fair values of the options granted and weighted average assumptions are as follows:
|  | For the Years Ended December 31, |
|  |  | 2013 |  |  | 2012 |  |  | 2011 |
Weighted average fair value of options granted |  | $ | 1.89 |  | $ | 2.32 |  | $ | 1.61 |
Risk-free interest rate |  |  | 0.76 | % |  | 0.65%-0.74 | % |  | 0.9%-2.8 | %
Expected life (years) |  |  | 5-7 |  |  | 5 |  |  | 5-8 |
Expected volatility factor |  |  | 67 | % |  | 69 | % |  | 68%-74 | %
Expected dividends |  |  | None |  |  | None |  |  | None |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | A summary of option activity under the Plans as of December 31, 2013, and changes during the year then ended, is presented below:
|  |  |  | Weighted-Average |  | Weighted-Average Remaining |  | Aggregate Intrinsic |
|  | Number of Options |  | Exercise Price |  | Contractual Term (years) |  | Value |
Outstanding at January 1, 2013 |  | 2,986,057 |  | $ | 2.75 |  |  |  |  |  |
Granted |  | 1,014,022 |  | $ | 1.89 |  |  |  |  |  |
Exercised |  | (201,500) |  | $ | 0.96 |  |  |  |  |  |
Forfeited/Expired |  | (750,510) |  | $ | 3.09 |  |  |  |  |  |
Outstanding at December 31, 2013 |  | 3,048,069 |  | $ | 2.99 |  | 4.48 |  | $ | 365,410 |
Exercisable at December 31, 2013 |  | 943,557 |  | $ | 2.98 |  | 2.13 |  | $ | 361,610 |
Vested and expected to vest at |  |  |  |  |  |  |  |  |  |  |
December 31, 2013 |  | 3,048,069 |  | $ | 2.99 |  | 4.48 |  | $ | 365,410 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] | A summary of restricted shares under the Company’s stock option plans as of December 31, 2013, and changes during the period then ended, are presented below:
|  |  |  |  | Weighted-Average Grant |
|  | Number of Shares |  |  | Date Fair Value |
Unvested at January 1, 2013 |  | 32,500 |  | $ | 3.14 |
Granted |  | - |  |  | - |
Vested |  | (7,500) |  |  | 2.59 |
Forfeited/Expired |  | — |  |  | - |
Unvested at December 31, 2013 |  | 25,000 |  | $ | 3.31 |

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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + 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 weighted-average grant-date fair value of equity options or other equity instruments granted 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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