Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details)

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Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Accounting Policies [Abstract]    
Money Market Funds, at Carrying Value $ 700 $ 551