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Cash and Cash Equivalents and Restricted Cash (Details Textual) (Subsidiaries [Member], USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
Subsidiaries [Member]
   
Cash and Cash Equivalents and Restricted Cash (Textuals) [Abstract]    
CapitalSource Bank deposits at the Federal Reserve Bank $ 83,100 $ 63,600