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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock
Accumulated Other Comprehensive (Loss) Income
Accumulated Deficit
Total
Balance at Dec. 31, 2013 $ 1,354,696 $ (295) $ (607,634) $ 746,767
Balance (in shares) at Dec. 31, 2013 297,159,000      
Increase (Decrease) in Shareholders' Equity        
Stock-based compensation $ 852     852
Exercise of stock options $ 1,382     1,382
Exercise of stock options (in shares) 697,000      
Unrealized (loss) gain on available-for-sale securities, net of taxes   1   1
Net loss     (99,168) (99,168)
Balance at Sep. 30, 2014 $ 1,357,934 (294) (706,802) 650,838
Balance (in shares) at Sep. 30, 2014 298,249,000      
Increase (Decrease) in Shareholders' Equity        
Shares issued for litigation settlement $ 1,004     1,004
Shares issued for litigation settlement (in shares) 393,000      
Balance at Dec. 31, 2014 $ 1,360,668 124 (919,577) 441,215
Balance (in shares) at Dec. 31, 2014 300,100,000      
Increase (Decrease) in Shareholders' Equity        
Shares issued for settlement of accounts payable $ 443     443
Shares issued for settlement of accounts payable (in shares) 430,295      
Stock-based compensation $ 1,047     1,047
Return of capital distribution (1,503)     (1,503)
Unrealized (loss) gain on available-for-sale securities, net of taxes   (1,126)   (1,126)
Net loss     (5,462) (5,462)
Balance at Sep. 30, 2015 $ 1,360,655 $ (1,002) $ (925,039) $ 434,614
Balance (in shares) at Sep. 30, 2015 300,530,000