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Net Income Per Share (Details Textual) (USD $)
9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Stock Options [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 64,000 50,000
Antidilutive Shares Outstanding Weighted Average Exercise Price (in dollars per share) $ 12.05 $ 15.73
Restricted Stock [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 635,850 419,100