Mortgage Loans Held For Sale (Details) (USD $)	3 Months Ended	12 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Loans Receivable Held-for-sale, Net [Abstract]
Mortgage loans held for sale	$ 10,235,000	$ 25,743,000
Mortgage loans held for sale, contractual balance	10,100,000	25,200,000
Gain expected upon sale of mortgage loans	$ 147,000	$ 568,000

Carrying amount of mortgage loans to individuals not classified as held for investment but are held-for-sale.

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

-Publisher FASB

-Name Accounting Standards Codification

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

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6520390

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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