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Income Taxes (Details Textual) (USD $)
6 Months Ended
Jun. 30, 2012
Income Taxes (Textual) [Abstract]  
Unrecognized tax benefits $ 680,000
Unrecognized tax benefits, interest 53,000
Unrecognized tax benefits that would affect the effective tax rate 252,000
Changes in the amount of unrecognized tax benefits $ 0