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Summary of stock options and warrants (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013
Options
Options Outstanding	1,685,000
Options Granted	37,000
Options Cancelled	5,000
Options Exercised	0
Options Outstanding	1,717,000
Weighted Ave. Exercise Price
Weighted Average Exercise Price Outstanding	$ 0.54
Weighted Average Exercise Price Granted	$ 0.70
Weighted Average Exercise Price Cancelled	$ 0.70
Weighted Average Exercise Price Exercised	$ 0
Weighted Average Exercise Price Outstanding	$ 0.54
Warrants
Warrants Outstanding	250,000
Warrants Granted	300,000
Warrants Cancelled	550,000
Warrants Exercised	0
Warrants Outstanding	0
Weighted Ave. Exercise Price
Weighted Ave. Exercise Price Outstanding	$ 0.70
Weighted Ave. Exercise Price Granted	$ 0.70
Weighted Ave. Exercise Price Cancelled	$ 0.70
Weighted Ave. Exercise Price Exercised	$ 0
Weighted Ave. Exercise Price Outstanding	$ 0

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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

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Number of options outstanding, including both vested and non-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 per share amount at which grantees can acquire shares of common stock by exercise of options.

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