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Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]    
Cumulative convertible preferred stock, par value $ 0.01 $ 0.01
Cumulative convertible preferred stock, shares authorized 1,000 1,000
Cumulative convertible preferred stock, shares issued 108 108
Cumulative convertible preferred stock, shares outstanding 108 108
Cumulative convertible preferred stock, minimum liquidation preference $ 2.66 $ 2.66
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 55,000 55,000
Common stock, shares issued 41,189 41,100
Common stock, shares outstanding 40,171 40,082
Treasury stock, shares 1,018 1,018