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Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Preferred stock, par value | $ 0.01 | $ 0.01
Preferred stock, shares authorized | 5,000 | 5,000
Preferred stock, shares outstanding |  |
Common stock, par value | $ 0.01 | $ 0.01
Common stock, shares authorized | 75,000 | 75,000
Common stock, shares outstanding | 42,039 | 41,484

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