Stock Options and Stock Grants (Details 1) (USD $)	12 Months Ended
Dec. 31, 2012
Summary of option activity
Outstanding, Number, Beginning Balance	1,587,432
Weighted Average Exercise Price per Share, Beginning Balance	$ 2.47
Granted, Shares	599,000
Weighted Average Exercise Price per Share, Granted	$ 0.23
Forfeited or expired	(329,233)
Weighted Average Exercise Price per Share, Forfeited or expired	$ 3.78
Outstanding, Number, Ending Balance	1,857,199
Weighted Average Exercise Price per Share, Ending Balance	$ 1.69
Weighted Average Remaining Contractual Term, Outstanding	7 years 3 months 4 days
Aggregate Intrinsic Value, Outstanding	$ 23,360
Exercisable, Shares	935,587
Weighted Average Exercise Price per Share, Exercisable	$ 2.63
Weighted Average Remaining Contractual Term Years, Exercisable	5 years 6 months 18 days
Aggregate Intrinsic Value, Exercisable
Shares available for grant	1,277,138

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently 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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For presentations that combine terminations, 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 or that expired.

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

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

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including 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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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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