Stock Option Plans (Details Narrative) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Shares available for grant	61,500	107,438
Weighted average remaining contractual term	7 years
Stock-based compensation	$ 427,877	$ 428,439
Unrecognized compensation cost	745,698
Unrecognized compensation cost recognition period	3 years
Weighted average fair value at the date of grant	$ 2.36	$ 2.26
Aggregate intrinsic value of outstanding options	1,290,457
Aggregate intrinsic value of exercisable options	805,223
Aggregate intrinsic value of options exercised	$ 190,235
Employee Plan
Vesting term	Options granted under the Employee Plan vest 25% one day after the first anniversary of the grant date and 25% one day after each of the next three anniversaries.
Shares available for grant	40,000
Director Plan
Vesting term	The Initial Option vests 25% on the date of grant and 25% on the anniversary of the grant date in each of the following 3 years. Each Annual Option becomes fully exercisable one day after the date of grant. The exercise price of all options granted equals the fair market value of the Common Stock on the date the option is granted and expires ten (10) years from the date of grant.
Shares available for grant	21,500
Shares authorized under plan	140,000
Shares offered under initial option	5,000
Shares offered under annual option	4,500

Annual grant of an option to purchase set number of shares of common stock.

No definition available.

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Initial grant of an option to purchase set number of shares of common stock.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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-Name Staff Accounting Bulletin (SAB)

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Aggregate unrecognized cost of option awards made to employees under a stock option plan or plans, that have yet to vest.

+ References

No definition available.

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- Definition

Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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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 total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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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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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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