Annual report pursuant to Section 13 and 15(d)

Balance Sheets and Statements of Operations Details (Intangible Asset Future Amortization Expense) (Details)

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Balance Sheets and Statements of Operations Details (Intangible Asset Future Amortization Expense) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2013 $ 3,374  
2014 3,374  
2015 3,374  
2016 2,812  
2017 0  
Net Carrying Amount $ 12,934 $ 16,442