Shareholders' Equity Activity for stock options and warrants (Details) (USD $)	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Shares, Other	39,128	125,000
Warrants Issued During Period, Value	$ 14,900	$ 50,600
Common Stock Warrants, Shares	55,010,546		55,287,611
Weighted Average Exercise Price, Warrants Outstanding	1.56		1.57
Share-based Compensation Arrangement by Share-based Payment Award, Options and Non-Option Equity Instruments, Outstanding [Roll Forward]
Warrants Granted	50,545
Weighted Average Exercise Price, Warrants Granted	$ 0.83
Warrants Exercised	207,610
Weighted Average Exercise Price, Warrants Exercised	$ 0.51
Warrants Expired	0
Weighted Average Exercise Price, Warrants Expired	$ 0.00
Warrants Canceled	120,000
Weighted Average Exercise Price, Warrants Canceled	$ 4.12
US Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 1.17		$ 1.29
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	4,860,331
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 0.62
Share-based Compensation Arrangement by Share-based Payment Award, Options and Non-Option Equity Instruments, Outstanding [Roll Forward]
Stock Options, Outstanding at December 31, 2011	21,686,680
Stock Options Exercised	0
Stock Options Forfeited	(50,000)
Stock Options Expired	(185,198)
Stock Options, Outstanding at September 30, 2012	26,311,813
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	$ 1.28
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price	$ 0.66
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 0.00

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The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.

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The decrease in the number of shares that could be issued attributable to the lapse of rights to exercise previously issued stock options under the terms of the option agreements under the plan during the reporting period.

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The weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that lapsed during the reporting period.

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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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The weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated during the reporting period due to noncompliance with plan terms during the reporting period.

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

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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 stock options awarded under the plan during the reporting 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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The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Number of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed.

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

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