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Share-Based Compensation (Value of Stock Options) (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Grant date fair value of stock options granted $ 27,663 $ 11,879 $ 8,100
Grant date fair value of stock options vested 37,814 53,871 90,810
Intrinsic value of stock options exercised 0 0 47,151
Total unrecognized compensation cost related to stock option grants $ 55,000    
Period for recognition 2 years 6 months