Fair Value Measurements (Details 2) (Trust preferred securities [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2012
Significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a recurring basis
Fair Value	$ 15,342
Valuation Technique	Discounted cash flows
Significant Unobservable Inputs (Level3)	Default rate
Maximum [Member]
Significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a recurring basis
Range of Inputs	0.00%
Minimum [Member]
Significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a recurring basis
Range of Inputs	100.00%

Amount of equity valued at fair value by the entity.

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- Definition

Weighted average expected volatility of stock price.

+ References

+ Details

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- Definition

Description of the inputs and valuation technique(s) used to measure fair value.

+ References

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- Definition

Description of where the gains or losses, arising from liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), are included in earnings or the statement of financial position.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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