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Immaterial Corrections (Details Textual) (Adjustments [Member], USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2011
Adjustments [Member]
   
Immaterial Corrections (Textual) [Abstract]    
Basic and diluted earnings per share $ 0.02 $ (0.01)
Basic and diluted earnings per share related to discontinued operations $ 0.04 $ (0.01)