Fair Value Measurements (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
GAINS AND LOSSES (REALIZED/UNREALIZED):
TRANSFERS INTO (OUT OF) OF LEVEL 3	$ 0
Significant Unobservable Inputs (Level 3) [Member]
Reconciliation for all assets and liabilities measured at fair value on a recurring basis
Beginning Balance	6,513	13,140
GAINS AND LOSSES (REALIZED/UNREALIZED):
Included in Earnings	0	0
Included in Other Comprehensive Income	442	986
SETTLEMENTS	293	920
TRANSFERS INTO (OUT OF) OF LEVEL 3		(4,913)
Ending Balance	6,662	8,293
Pooled Trust Preferred Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Reconciliation for all assets and liabilities measured at fair value on a recurring basis
Beginning Balance	2,981	2,820
GAINS AND LOSSES (REALIZED/UNREALIZED):
Included in Earnings
Included in Other Comprehensive Income	480	129
SETTLEMENTS	169	(10)
TRANSFERS INTO (OUT OF) OF LEVEL 3
Ending Balance	3,292	2,939
Single Trust Preferred Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Reconciliation for all assets and liabilities measured at fair value on a recurring basis
Beginning Balance		4,210
GAINS AND LOSSES (REALIZED/UNREALIZED):
Included in Earnings
Included in Other Comprehensive Income		703
SETTLEMENTS	0
TRANSFERS INTO (OUT OF) OF LEVEL 3		(4,913)
Ending Balance	0	0
Private Mortgage-Backed Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Reconciliation for all assets and liabilities measured at fair value on a recurring basis
Beginning Balance	3,532	6,110
GAINS AND LOSSES (REALIZED/UNREALIZED):
Included in Earnings
Included in Other Comprehensive Income	(38)	154
SETTLEMENTS	124	(910)
TRANSFERS INTO (OUT OF) OF LEVEL 3
Ending Balance	$ 3,370	$ 5,354

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- Definition

Amount of gain (loss) recognized in earnings, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3).

+ References

+ Details

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Period Type:	duration

- Definition

Amount of gain (loss) recognized in other comprehensive income, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3).

+ References

+ Details

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- Definition

Settlements that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

+ References

+ Details

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- Definition

This element represents [net] transfers in to and out of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c(3)

-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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- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

+ 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)

-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

-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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