Stock Based Compensation (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2012
Summary of Stock Option Activity
Shares Outstanding at Beginning Balance	221,026
Shares Granted	7,875
Shares Exercised	(760)
Shares Forfeited	(7,690)
Shares Outstanding, Ending Balance	220,451
Shares Exercisable at year - end	205,101
Weighted Average Exercise Price Outstanding, Beginning Balance	$ 21.06
Weighted Average Exercise Price Granted	$ 11.20
Weighted Average Exercise Price Exercised	$ 8.11
Weighted Average Exercise Price Forfeited	$ 21.43
Weighted Average Exercise Price Outstanding, Ending Balance	$ 20.74
Weighted Average Price option Exercisable at year-end	$ 21.40
Weighted Average Remaining Contractual Term, Outstanding at end of year	3 years 10 months 24 days
Weighted Average Remaining Contractual Term, Exercisable at year-end	3 years 6 months
Aggregate Intrinsic Value, Outstanding at end of year	$ 235,000
Aggregate Intrinsic Value, Exercisable at year-end	$ 165,000