Stock Options (Details) (USD $)	9 Months Ended
Sep. 30, 2013
Number of Shares
Beginning balance	425,965
Granted	0
Forfeited	0
Exercised	19,700
Ending balance	406,265
Outstanding exercisable options at end of quarter	406,265
Weighted Average Exercise Price
Beginning balance	$ 1.87
Granted	$ 0.00
Forfeited	$ 0.00
Exercised	$ 0.86
Ending balance	$ 1.82
Outstanding exercisable options at end of quarter	$ 1.87
Intrinsic value of outstanding options	$ 107,000
Intrinsic value of exercisable options	$ 107,000

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

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

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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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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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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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

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