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Income Taxes (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Income Taxes [Abstract]        
State income and federal minimum tax expense $ 28,000 $ 30,000 $ 58,000 $ 46,000