Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity Warrants (Details)

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Stockholders' Equity Warrants (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Class of Warrant or Right [Line Items]  
Warrants Exercised During Period (19,417,571)
Class of Warrant or Right, Exercise Price of Warrants or Rights 11.00
Stock Issued During Period, Shares, Conversion of Convertible Securities 19,417,571
Proceeds from issuance of common stock in connection with exercise of warrants $ 213,593
Cashless Warrants Exercised During Period (300,000)
Stock Issued During Period, Shares, Cashless Exercise of Warrants, Forfeited (277,452)
Stock Issued During Period, Shares, Cashless Exercise of Warrant 22,548
Class of Warrant or Right, Outstanding 13,531,429