v2.4.0.6

Stock Option Activities (Detail) (USD $)	6 Months Ended
Stock Option Activities (Detail) (USD $)	Jun. 30, 2012
Number of options
Beginning Balance	360,000
Granted
Exercised
Cancelled or expired
Ending Balance	360,000
Exercisable at June 30, 2012	120,000
Weighted average exercise price per share
Beginning Balance	$ 0.083
Ending Balance	$ 0.083
Exercisable at June 30, 2012	$ 0.083
Weighted average remaining contractual life
Outstanding	9 years 3 months 7 days
Exercisable at June 30, 2012	9 years 3 months 7 days
Aggregate intrinsic value
Ending Balance	$ 2,400
Exercisable at June 30, 2012	$ 2,400

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

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

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

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