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Common Shares (Tables) | 12 Months Ended
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Dec. 31, 2016
Capital Stock [Abstract] |
Summary Of Warrant Activity |
|  |  |  | Weighted |  | Weighted |  |  |  |
|  |  |  | average |  | average |  |  |  |
|  | Warrants |  | exercise price |  | remaining life |  |  |  |
|  | outstanding |  | per share |  | (yrs.) |  | Intrinsic value |
As of December 31, 2013 |  | 19,977,743 |  | $ | 4.63 |  | 1.6 |  | $ | — |
Expired (issued as part of equity financing completed in 2012) |  | (4,757,941) |  |  |  |  |  |  |  |  |
As of December 31, 2014 |  | 15,219,802 |  | $ | 5.00 |  | 0.8 |  | $ | — |
Expired (issued as part of equity financing completed in 2010) |  | (15,219,802) |  |  |  |  |  |  |  |  |
As of December 31, 2015 |  | — |  | $ | — |  | — |  | $ | — |
Issued |  | 6,514,625 |  |  | 1.92 |  | 2.6 |  |  | — |
As of December 31, 2016 |  | 6,514,625 |  | $ | 1.92 |  | 2.6 |  | $ | — |
Summary of Stock-based Compensation Expense |
|  | Year Ended December 31, |
|  | 2016 |  | 2015 |  | 2014 |
Stock options |  | $ | 23 |  | $ | 8 |  | $ | 160 |
Restricted stock units |  |  | 622 |  |  | 809 |  |  | 966 |
|  | $ | 645 |  | $ | 817 |  | $ | 1,126 |
Summary Of Option Activity |
|  |  |  | Weighted average |  | Weighted average |  | Aggregate |
|  | Number of |  | exercise price |  | remaining |  | intrinsic |
|  | options |  | per option |  | contractual term |  | value |
Outstanding - December 31, 2013 |  | 2,882,500 |  | $ | 1.79 |  | 3.07 |  | $ | 54 |
Granted |  | 175,000 |  |  | 0.52 |  |  |  |  | — |
Cancelled/Forfeited |  | (125,000) |  |  | 3.16 |  |  |  |  | — |
Expired |  | (675,000) |  |  | 1.85 |  |  |  |  | — |
Outstanding - December 31, 2014 |  | 2,257,500 |  |  | 1.60 |  | 3.02 |  |  | — |
Outstanding - December 31, 2015 |  | 2,257,500 |  |  | 1.60 |  | 2.02 |  |  | — |
Granted |  | 50,000 |  |  | 1.11 |  |  |  |  | — |
Exercised |  | (65,500) |  |  | 0.39 |  |  |  |  | 42 |
Expired |  | (697,500) |  |  | 2.91 |  |  |  |  | — |
Outstanding - December 31, 2016 |  | 1,544,500 |  | $ | 1.05 |  | 1.79 |  | $ | 626 |
Exercisable - December 31, 2016 |  | 1,248,250 |  | $ | 1.18 |  | 1.64 |  | $ | 480 |
Summary Of The Status Of Unvested Stock Options |
|  |  |  |  |  |  | Weighted |
|  |  |  | Weighted |  | average |
|  |  |  | average |  | remaining |
|  |  |  | grant-date |  | amortization |
|  | Number of |  | fair value |  | period |
|  | options |  | per option |  | (Years) |
Unvested - December 31, 2013 |  | 738,750 |  | $ | 0.22 |  | 4.99 |
Granted |  | 175,000 |  |  | 0.30 |  |  |
Vested |  | (667,500) |  |  | 0.24 |  |  |
Unvested - December 31, 2014 |  | 246,250 |  |  | 0.22 |  | 3.99 |
Unvested - December 31, 2015 |  | 246,250 |  |  | 0.22 |  | 3.00 |
Granted |  | 50,000 |  |  | 0.69 |  |  |
Unvested - December 31, 2016 |  | 296,250 |  |  | 0.49 |  | 1.23 |
Schedule of Share Based Payments Valuation Assumptions |
|  | Year Ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |  |
Expected volatility |  | 77.68 | % |  | — | % |  | 69.17 | % |
Risk-free interest rate |  | 1.12 | % |  | — | % |  | 1.75 | % |
Expected life (years) |  | 5 |  |  | — |  |  | 5 |  |
Dividend yield |  | N/A |  |  | — |  |  | N/A |  |
Forfeiture assumption |  | 0 | % |  | — | % |  | 10 | % |
Summary Of Restricted Stock Units Activity |
|  |  |  | Weighted average |
|  | Number |  | grant-date fair |
|  | of units |  | value per unit |
Unvested - December 31, 2013 |  | 2,594,464 |  | $ | 2.00 |
Cancelled/forfeited |  | (865,635) |  |  | 3.42 |
Vested |  | (115,000) |  |  | 3.84 |
Granted |  | 2,079,000 |  |  | 0.46 |
Unvested - December 31, 2014 |  | 3,692,829 |  | $ | 0.74 |
Cancelled/forfeited |  | (841,038) |  |  | 0.73 |
Vested |  | (493,345) |  |  | 1.62 |
Granted |  | 1,727,000 |  |  | 0.27 |
Unvested - December 31, 2015 |  | 4,085,446 |  | $ | 0.44 |
Vested |  | (2,475,046) |  |  | 0.32 |
Granted |  | 1,057,987 |  |  | 0.84 |
Unvested - December 31, 2016 |  | 2,668,387 |  | $ | 0.49 |
Weighted Average Common Shares (Table) |
|  | At December 31, |
|  | 2016 |  | 2015 |  | 2014 |
Basic common shares |  | 89,064,260 |  | 82,571,182 |  | 82,294,331 |
Effect of dilutive stock-based awards |  | — |  | 1,183,898 |  | — |
Diluted common shares |  | 89,064,260 |  | 83,755,080 |  | 82,294,331 |

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