Describes the approximate term of the credit derivative or each group of similar credit derivatives.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4K

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5708775-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44DD

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_CreditDerivativeTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Derivatives (Details - narrative items)		12 Months Ended
Derivatives (Details - narrative items)	Dec. 31, 2012 issuers	Dec. 31, 2012 [MinimumMember]	Dec. 31, 2012 [MaximumMember]	Dec. 31, 2012 [DesignatedAsHedgingInstrumentMember] derivatives	Dec. 31, 2011 [DesignatedAsHedgingInstrumentMember] derivatives
Derivatives Fair Value [Line Items]
Derivative number of instruments held				0	0
Credit derivative term		0	5
Number Of Credit Default Swaps Issuers In Default	0