Note 4 - Stock-based Compensation (Detail) - Stock Options (USD $)	6 Months Ended
Jun. 30, 2012
Outstanding at June 30, 2012	345,500
Outstanding at June 30, 2012 (in Dollars per share)	$ 1.72
Outstanding at June 30, 2012	6 years
Outstanding at June 30, 2012 (in Dollars)	$ 13,680
Vested and exercisable at June 30, 2012	196,667
Vested and exercisable at June 30, 2012 (in Dollars per share)	$ 1.80
Vested and exercisable at June 30, 2012	3 years 255 days
Vested and exercisable at June 30, 2012 (in Dollars)	$ 13,680

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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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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