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Stock Based Compensation (Details 3) (Warrant [Member], USD $)	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2012	Dec. 31, 2011
Warrant [Member]
Summary of warrant transactions
Outstanding Beginning Balance, Warrants	6,000
Exercisable Beginning Balance, Warrants	6,000
Granted, Warrants
Expired / Forfeited, Warrants	4,000
Exercised, Warrants	2,000
Outstanding Ending Balance, Warrants
Outstanding Beginning Balance, Weighted Average Exercise Price	$ 10.42
Exercisable Beginning Balance, Weighted Average Exercise Price	$ 10.42
Granted, Weighted Average Exercise Price
Expired / Forfeited, Weighted Average Exercise Price	$ 10.00
Exercised, Weighted Average Exercise Price	$ 11.25
Outstanding Ending Balance, Weighted Average Exercise Price

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Share based compensation arrangement by share based payment award non option equity instruments exercisable.

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Share based compensation arrangement by share based payment award non option equity instruments outstanding weighted average exercise price.

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Number of non-option equity instruments exercised by participants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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Number of shares under non-option equity instrument agreements that were either cancelled or expired.

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Net number of non-option equity instruments granted to participants.

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Number of shares reserved for issuance under non-option equity instrument agreements awarded that validly exist and are outstanding, including vested instruments.

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