Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

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Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data
Sep. 30, 2011
Dec. 31, 2010
Consolidated Balance Sheets [Abstract]    
Allowance for doubtful accounts $ 2,575 $ 2,790
Preferred stock, par value per share $ 0.01 $ 0.01
Preferred stock, shares authorized 5,000,000 5,000,000
Preferred stock, shares outstanding at liquidation preference 10,000 10,000
Common stock, par value per share $ 0.01 $ 0.01
Common stock, shares authorized 190,000,000 190,000,000
Common stock, shares outstanding 87,141,716 79,605,474