Loans and Allowance for Loan Losses (Details 2) (USD $)	Sep. 30, 2012	Dec. 31, 2011	Dec. 31, 2010
Loans and Leases Receivable, Allowance	$ 5,279,676	$ 7,400,049	$ 9,132,000
Commercial Real Estate Mortgage [Member]
Loans and Leases Receivable, Allowance	3,112,000	3,557,000	1,793,000
Consumer Real Estate Mortgage [Member]
Loans and Leases Receivable, Allowance	1,187,000	2,518,000	3,111,000
Construction and Land Development [Member]
Loans and Leases Receivable, Allowance	765,000	827,000	3,238,000
Commercial and Industrial Loans [Member]
Loans and Leases Receivable, Allowance	207,000	482,000	925,000
Consumer and Other Loans [Member]
Loans and Leases Receivable, Allowance	9,000	16,000	65,000
Performing Loans [Member]
Loans and Leases Receivable, Allowance	2,110,000	2,424,000
Performing Loans [Member] \| Commercial Real Estate Mortgage [Member]
Loans and Leases Receivable, Allowance	919,000	952,000
Performing Loans [Member] \| Consumer Real Estate Mortgage [Member]
Loans and Leases Receivable, Allowance	863,000	1,264,000
Performing Loans [Member] \| Construction and Land Development [Member]
Loans and Leases Receivable, Allowance	319,000	174,000
Performing Loans [Member] \| Commercial and Industrial Loans [Member]
Loans and Leases Receivable, Allowance	0	18,000
Performing Loans [Member] \| Consumer and Other Loans [Member]
Loans and Leases Receivable, Allowance	9,000	16,000
Impaired Loans [Member]
Loans and Leases Receivable, Allowance	3,170,000	4,976,000
Impaired Loans [Member] \| Commercial Real Estate Mortgage [Member]
Loans and Leases Receivable, Allowance	2,193,000	2,605,000
Impaired Loans [Member] \| Consumer Real Estate Mortgage [Member]
Loans and Leases Receivable, Allowance	324,000	1,254,000
Impaired Loans [Member] \| Construction and Land Development [Member]
Loans and Leases Receivable, Allowance	446,000	653,000
Impaired Loans [Member] \| Commercial and Industrial Loans [Member]
Loans and Leases Receivable, Allowance	207,000	464,000
Impaired Loans [Member] \| Consumer and Other Loans [Member]
Loans and Leases Receivable, Allowance	$ 0	$ 0

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.

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