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Condensed Consolidated Statements Shareholders' Equity (USD $)
In Thousands, except Share data
Common Stock [Member]
Additional Paid-In Capital [Member]
Deficit [Member]
Accumulated Other Comprehensive Income/(Loss) [Member]
Total
Balances at Dec. 31, 2001 $ 197,900 $ 2,786 $ (199,072)   $ 1,614
Beginning Balance, shares at Dec. 31, 2001 4,535,752        
Shares issued, net of transaction costs 123,413       123,413
Number of shares issued in transaction, (Shares) 40,143,272        
Warrants and Options   9,329     9,329
Dividend-in-kind     (34,941)   (34,941)
Other comprehensive loss       676 676
Net loss     (61,254)   (61,254)
Balances at Dec. 31, 2009 321,313 12,115 (295,267) 676 38,837
Ending Balance, shares at Dec. 31, 2009 44,679,024        
Shares issued, net of transaction costs 28,406 9,329     37,735
Number of shares issued in transaction, (Shares) 17,240,728        
Convertible debt repurchase, shares         1,902,684
Warrants and Options   1,537     1,537
Other comprehensive loss       253 253
Net loss     (20,020)   (20,020)
Balances at Dec. 31, 2010 349,719 22,981 (315,287) 929 58,342
Ending Balance, shares at Dec. 31, 2010 61,919,752        
Shares issued, net of transaction costs 30,400 588     30,988
Number of shares issued in transaction, (Shares) 9,584,131       30,402,615
Stock options expensed   1,496      
Restricted stock units expensed   524      
Compensation options exercised, shares         354,984
Warrants and Options   1,101     1,101
Other comprehensive loss       (754) (754)
Net loss     51,546   51,546
Balances at Dec. 31, 2011 380,119 24,670 (263,741) 175 141,223
Ending Balance, shares at Dec. 31, 2011 71,503,883        
Shares issued, net of transaction costs 23,464       23,464
Number of shares issued in transaction, (Shares) 10,059,615        
Stock options expensed   1,081      
Restricted stock units expensed   3,144      
Compensation options exercised, shares         32,500
Warrants issued   3,260      
Warrants and Options   7,485     7,485
Other comprehensive loss       (173) (173)
Net loss     (70,656)   (70,656)
Balances at Dec. 31, 2012 $ 403,583 $ 32,155 $ (334,397) $ 2 $ 101,343
Ending Balance, shares at Dec. 31, 2012 81,563,498