Stock Based Compensation (Details 1) (USD $)	9 Months Ended	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Status of the Corporation's stock option plans
Outstanding at beginning of period, Shares	587,342	463,642	463,642
Outstanding at beginning of period, Weighted-average exercise price	$ 4.68	$ 5.84	$ 5.84
Granted, Shares	0		161,538
Granted, Weighted-average exercise price	$ 0.00	$ 2.14	$ 2.14
Exercised, Shares	0		0
Exercised, Weighted-average exercise price	$ 0.00		$ 0.00
Forfeited, shares	(5,454)		(29,338)
Forfeited, Weighted-average exercise price	$ 10.63		$ 7.03
Expired, shares	0		(8,500)
Expired, Weighted-average exercise price	$ 0.00		$ 11.93
Outstanding at end of period, Shares	581,888		587,342
Outstanding at end of period, Weighted-average exercise price	$ 4.62		$ 4.68
Options exercisable at period end, Shares	395,233		317,467
Options exercisable at period end, Weighted-average exercise price	$ 5.70		$ 6.58
Weighted-average fair value of options granted during the period			$ 1.49

Weighted average fair value of options granted during period.

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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.

+ References

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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.

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

+ References

No definition available.

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

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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

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