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Income Taxes (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Income Taxes [Abstract]      
Operating loss carryforwards, expiration date expire between December 31, 2014 and December 31, 2031.    
Valuation allowance for state tax net operating losses $ 108,000 $ 379,000  
Unrecognized tax benefits 756,000 655,000 518,000
Potential increase (decrease) in income tax provision, if recognized 500,000 400,000  
Possible reduction in unrecognized tax benefits resulting from audit settlements 200,000    
Income tax examination, interest expense 10,365    
Income tax examination, penalties from examination $ 1,248