Stockholders' Deficiency (Details 1) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Number of options, outstanding
Outstanding, beginning of period (in shares)	2,543,150	2,183,899
Granted	1,937,857	935,500
Exercised
Forfeited	(536,450)	(576,249)
Outstanding, end of period (in shares)	3,944,557	2,543,150
Exercisable, December 31, 2014	3,135,876
Options, weighted average exercise price
Outstanding, beginning of period (in dollars per share)	$ 2.37	$ 2.76
Granted	$ 0.13	$ 0.91
Exercised
Forfeited	$ 2.37	$ 3.96
Outstanding, end of period (in dollars per share)	$ 1.27	$ 2.37
Exercisable, December 31, 2014	$ 1.11
Weighted Average Remaining Life In Years
Weighted Average Remaining Life (in years) Outstanding	7 years 4 months 24 days
Weighted Average Remaining Life (in years) Exercisable	8 years
Aggregate Intrinsic Value
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Aggregate Intrinsic Value Exercisable

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price of options that were either forfeited or expired.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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