Stock-Bassed Compensation (Narrative) (Details) (USD $)	9 Months Ended	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based compensation arrangement, options, vesting period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights			39,000	35,000	51,000
Compensation expense related to stock options			$ 39,000	$ 35,000	$ 51,000
Compensation expense related to stock options, Net of tax			23,000	21,000	31,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross			2,125	2,780	2,803
Restricted Stock Awards Compensation Expense Included In Salary Expense			25,000	25,000	25,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized			95,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 5 months 25 days
Stock Issued During Period, Value, Restricted Stock Award, Gross	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			27,784	27,784	38,203
Employee Director Stock Option Plan 2003 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			403,219
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			27,784	27,784	38,203
2009 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			392,292
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			2,125	2,780	2,803

Restricted Stock Awards Compensation Expense Included In Salary Expense

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- Definition

Share-based compensation arrangement, options, vesting period

+ References

No definition available.

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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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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The amount of expense, net of income tax, 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.

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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- Definition

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.

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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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- Definition

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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- Definition

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

+ References

No definition available.

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- Definition

Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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-Name Statement of Financial Accounting Standard (FAS)

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- Definition

Aggregate value of stock related to Restricted Stock Awards issued during the period.

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-Name Regulation S-X (SX)

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