Loans and Allowance - Activity in allowance for loan losses (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Allowance for Loan and Lease Losses [Roll Forward]
Balances at end of period	$ 3,564	$ 4,003
Loans Receivable
Allowance for Loan and Lease Losses [Roll Forward]
Balances at beginning of period	4,003	3,806
Provision for losses	1,382	2,771
Loans charged off	(1,932)	(2,622)
Recoveries on loans	111	48
Balances at end of period	3,564	4,003
Loans Receivable \| Residential Construction
Allowance for Loan and Lease Losses [Roll Forward]
Balances at beginning of period	23	35
Provision for losses	(20)	(7)
Loans charged off		(5)
Recoveries on loans	4
Balances at end of period	7	23
Loans Receivable \| 1-4 Family
Allowance for Loan and Lease Losses [Roll Forward]
Balances at beginning of period	1,986	746
Provision for losses	493	1,844
Loans charged off	(1,136)	(604)
Recoveries on loans	80
Balances at end of period	1,423	1,986
Loans Receivable \| Multi-Family
Allowance for Loan and Lease Losses [Roll Forward]
Balances at beginning of period	65	138
Provision for losses	216	(37)
Loans charged off		(36)
Recoveries on loans
Balances at end of period	281	65
Loans Receivable \| Nonresidential
Allowance for Loan and Lease Losses [Roll Forward]
Balances at beginning of period	822	1,632
Provision for losses	619	243
Loans charged off	(366)	(1,056)
Recoveries on loans	3	3
Balances at end of period	1,078	822
Loans Receivable \| Land
Allowance for Loan and Lease Losses [Roll Forward]
Balances at beginning of period	993	976
Provision for losses	(11)	836
Loans charged off	(341)	(819)
Recoveries on loans
Balances at end of period	641	993
Loans Receivable \| Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balances at beginning of period	70	157
Provision for losses	63	(87)
Loans charged off
Recoveries on loans
Balances at end of period	133	70
Loans Receivable \| Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balances at beginning of period	44	122
Provision for losses	22	(21)
Loans charged off	(89)	(102)
Recoveries on loans	24	45
Balances at end of period	$ 1	$ 44

Reflects the gross amount charged against earnings during the period as credit losses (bad debt expense) based on review of the loan and lease portfolio and application of the methodology for estimating credit losses.

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Reflects a reduction in bad debt expense attributable to collections of loans and lease receivables which had previously been fully or partially charged off as bad debts.

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- Definition

Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities.

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 8, 9

-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 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)(1)(ii)

-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(d))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher OTS

-Name Federal Regulation (FR)

-Number Title 12

-Section 563c.102

-Paragraph 8

-Subparagraph a(ii)

-Chapter V

-Subsection I

-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph d

-Article 9

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 114

-Paragraph 20

-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 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section L

-Subsection 1

+ Details