VARIABLE INTEREST ENTITIES INVESTMENT SECURITIES TRADING (Schedule of Investment Trading Securities at Fair Value) (Details) RSO (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2012	Dec. 31, 2012 RSO [Member]	Dec. 31, 2011 RSO [Member]	Dec. 31, 2012 RSO [Member] Structured Finance [Member]	Dec. 31, 2011 RSO [Member] Structured Finance [Member]	Dec. 31, 2012 RSO [Member] Residential Mortgage Backed Securities [Member]	Dec. 31, 2011 RSO [Member] Residential Mortgage Backed Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost		$ 15,460	$ 36,074	$ 9,413	$ 27,345	$ 6,047	$ 8,729
Unrealized Gains	1,100	11,752	6,198	10,894	6,098	858	100
Unrealized Losses		(2,369)	(3,599)	(1,028)	(1,890)	(1,341)	(1,709)
Fair Value		$ 24,843	$ 38,673	$ 19,279	$ 31,553	$ 5,564	$ 7,120

Financial instruments that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time, usually less than one year or the normal operating cycle, whichever is longer) or for debt and equity securities formerly categorized as available-for-sale or held-to-maturity which the entity held as of the date it opted to account for such securities at fair value. An enterprise may also categorize such a security as trading without the intent to sell it in the near term assuming the decision to categorize the security as trading occurred at acquisition.

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-Name Accounting Standards Codification

-Glossary Trading Securities

-URI http://asc.fasb.org/extlink&oid=6526789

+ Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Trading Securities which consist of all investments in certain debt and equity securities that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for which an entity has elected the fair value option. Trading generally reflects active and frequent buying and selling, and trading securities are generally used with the objective of generating profits on short-term differences in price, but this category of investments may also include items which are not intended to be sold in the near term or for which the fair value option has been elected.

+ References+ Details

- Definition

The increase (decrease) resulting in a gain from the difference between the fair value and the carrying value, or in the comparative fair values, of trading securities held at each balance sheet date, that was included in earnings for the period.

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The increase (decrease) resulting in a loss from the difference between the fair value and the carrying value, or in the comparative fair values, of trading securities held at each balance sheet date, that was included in earnings for the period.

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