Stockholders' Equity (Details) (Warrant [Member], USD $)	6 Months Ended
Jun. 30, 2012
Warrant [Member]
Summery of warrant activity
Balance, outstanding	220,158
Options, granted	73,386
Options, Exercised	(73,386)
Options, cancelled	(220,158)
Balance, ending
Options exercisable, ending
Weighted average pxercise price, Balance	$ 15.73
Weighted average pxercise price, granted	$ 2.70
Weighted average pxercise price, exercised	$ (2.70)
Weighted average pxercise price, cancelled	$ (15.73)
Weighted average pxercise price, Balance ending
Weighted average pxercise price, Exercisable ending balance

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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.

+ References

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- Definition

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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- Definition

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

+ References

No definition available.

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- Definition

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

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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

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