Organization and Nature of Business and Summary of Significant Accounting Policies (FHLB stock) (Details) (Federal Home Loan Bank stock [Member], USD $)	Dec. 31, 2012
Federal Home Loan Bank stock [Member]
Schedule of Cost-method Investments [Line Items]
Federal Home Loan Bank stock, percent of total assets required	0.12%
Federal Home Loan Bank stock, percent of outstanding advances required	4.45%
Quoted market value	$ 0
Par value per share, FHLB stock	$ 100

Value of the other investments as measured by the quoted market price.

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

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-BRD

-Paragraph 6-14

-IssueDate 2006-05-01

-Chapter 7

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 940

-SubTopic 820

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7519002&loc=d3e45360-110995

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant