Stock-Based Compensation Plans (Details Textual) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized			172,195
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 0		$ 0		$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			159,100
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value			37,022
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Remaining Contractual Term2			3 years 6 months
Restricted Stock or Unit Expense	48,000	41,000	153,000	109,000
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures			9,000
Deferred Stock Unit Expense	0	60,000	0	175,000
Stock or Unit Option Plan Expense	$ 0	$ 0	$ 0	$ 0

Reflects the Amount of expenses incurred on defrred stock units.

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- Definition

The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

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Number of additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

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- Definition

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.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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- Definition

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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- Definition

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.

+ References

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- Definition

Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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-Name Accounting Standards Codification

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

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The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

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