Summary Of Common Stock Option Activity (Detail) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Begining Balance (Shares Issuable Under Outstanding Options)	0	26,645,000
Issued (Shares Issuable Under Outstanding Options)	197,600,000
Expired/forfeited (Shares Issuable Under Outstanding Options)	(7,000,000)	(26,645,000)
Exercised (Shares Issuable Under Outstanding Options)	0
Ending Balance (Shares Issuable Under Outstanding Options)	190,600,000	0
Exercisable, Shares Issuable Under Outstanding Options	95,300,000
Begining Balance (Price Range or Weighted Average Exercise Price)	$ 0	$ 0.06
Issued (Price Range or Weighted Average Exercise Price)	$ 0.01
Expired/forfeited (Price Range or Weighted Average Exercise Price)	$ 0.01
Ending Balance (Price Range or Weighted Average Exercise Price)	$ 0.01	$ 0
Exercisable, Weighted Average Exercise Price	$ 0.01
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expired/forfeited (Price Range or Weighted Average Exercise Price)		$ 0.119
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expired/forfeited (Price Range or Weighted Average Exercise Price)		$ 0.02

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Number of shares under non-option equity instrument agreements that were either cancelled or expired.

+ References

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- Definition

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.

+ References

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

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(b)

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- Definition

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

+ References

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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No definition available.

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- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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