Securities (Narrative) (Details) (USD $)	9 Months Ended
Sep. 30, 2012 security	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Total Unrealized Loss	$ 947,000	$ 2,557,000
Available for sale securities, number of securities	59
Residential Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total Unrealized Loss	$ 290,000

Amount of the excess of amortized cost basis over fair value of securities in a loss position and categorized neither as held-to-maturity nor trading securities.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563

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