Fair Value of Assets and Liabilities (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2012
Obligations of state and municipal securities
Changes in balance sheet carrying values associated with recurring Level 3 financial instruments
Beginning balance	$ 259
Gain / (Loss) Included in OCI	1
Ending Balance	260
Agency mortgage backed securities
Changes in balance sheet carrying values associated with recurring Level 3 financial instruments
Gain / (Loss) Included in OCI	(191)
Purchases, Issuances, and Settlements	4,674
Ending Balance	4,483
Non-agency mortgage backed securities
Changes in balance sheet carrying values associated with recurring Level 3 financial instruments
Beginning balance	3,074
Sales and Maturities	$ (3,074)

Represents the purchases, issuances, and settlements (net) which have taken place during the period in relation to assets measured at fair value on a recurring basis using unobservable inputs (Level 3).

No definition available.

+ Details

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Period Type:	duration

- Definition

Sales and maturities 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

No definition available.

+ 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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