2.2.0.7 false Organization 0201 - Disclosure - Organization true false false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 EPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Organization [Abstract] 0 us-gaap_GeneralPoliciesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 3 Organization 1 us-gaap_NatureOfOperations us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 <div style="text-align:center;">NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS</div>Note 1.  Organization CapitalSource Inc. (“CapitalSource,” and together with its subsidiaries other than CapitalSource Bank and its subsidiaries, the “Parent Company”), a Delaware corporation, is a commercial lender that, through its wholly owned subsidiary, CapitalSource Bank, provides financial products to small and middle market businesses nationwide and provides depository products and services in southern and central California. Substantially all new loans are originated at CapitalSource Bank. The Parent Company's commercial lending activities consist primarily of satisfying its existing commitments made prior to CapitalSource Bank's formation and receiving payments on its existing loan portfolio. Consequently, we expect that our loans at the Parent Company will gradually run off, while CapitalSource Bank's loan portfolio will continue to grow. For the three months ended September 30, 2010, we operated as two reportable segments: 1) CapitalSource Bank and 2) Other Commercial Finance. For the six months ended June 30, 2010 and three and nine months ended September 30, 2009, we operated as three reportable segments: 1) CapitalSource Bank, 2) Other Commercial Finance, and 3) Healthcare Net Lease. Our CapitalSource Bank segment comprises our commercial lending and banking business activities, and our Other Commercial Finance segment comprises our loan portfolio and other business activities in the Parent Company. Our Healthcare Net Lease segment comprised our direct real estate investment business activities, which we exited completely with the sale of all of the assets related to this segment.   NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTSNote 1.  Organization CapitalSource Inc. (“CapitalSource,” and together false false false us-types:textBlockItemType textblock Describes the nature of an entity's business, the major products or services it sells or provides and its principal markets, including the locations of those markets. If the entity operates in more than one business, the disclosure also indicates the relative importance of its operations in each business and the basis for the determination (for example, assets, revenues, or earnings). Disclosures about the nature of operations need not be quantified; relative importance could be conveyed by use of terms such as "predominately", "about equally", or "major and other". This element is also referred to as "Business Description". Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-6 -Paragraph 10 false 1 2 false UnKnown UnKnown UnKnown false true