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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
Sep. 30, 2011
Dec. 31, 2010
Condensed Consolidated Balance Sheets [Abstract]  
Preferred stock, par value$ 0.01$ 0.01
Preferred stock, shares authorized20,000,00020,000,000
Preferred stock, shares issued00
Preferred stock, shares outstanding00
Common stock, par value$ 0.01$ 0.01
Common stock, shares authorized50,000,00050,000,000
Common stock, shares issued23,993,17423,977,061
Common stock, shares outstanding23,877,36223,861,249
Treasury stock, shares115,812115,812