Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical)

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CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) (USD $)
Mar. 31, 2012
Dec. 31, 2011
Stockholders' equity:    
Preferred stock, par value (in dollars per share) $ 0.05 $ 0.05
Preferred stock, shares authorized (in shares) 1,000,000 1,000,000
Common stock, par value (in dollars per share) $ 0.0075 $ 0.0075
Common stock, shares authorized (in shares) 92,666,666 92,666,666
Common stock, shares outstanding (in shares) 68,076,152 35,107,007