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Loans, Past Due (Details) (USD $) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Dec. 31, 2011
Financing receivable, recorded investment, past due [Line Items] |  |  |
Loans 30-89 Days Past Due | $ 11,583,000 |  | $ 28,276,000
Loans 90 or More Days Past Due | 9,119,000 |  | 10,530,000
Total Past Due Loans | 20,702,000 |  | 38,806,000
Total Current Loans | 605,080,000 |  | 631,691,000
Total loans | 625,782,000 |  | 670,497,000
Accruing Loans 90 or More Days Past Due | 2,398,000 |  | 2,709,000
Non-accrual loans | 18,839,000 |  | 21,785,000
Threshold amount of impaired loans not individually evaluated for impairment | 250,000 |  |
Accruing impaired loans | 38,700,000 | 21,100,000 | 30,600,000
Interest income recognized on accruing impaired loans | 1,400,000 | 897,000 | 1,700,000
Real Estate Loans - Construction and land development [Member] |  |  |
Financing receivable, recorded investment, past due [Line Items] |  |  |
Loans 30-89 Days Past Due | 1,513,000 |  | 10,033,000
Loans 90 or More Days Past Due | 1,846,000 |  | 3,338,000
Total Past Due Loans | 3,359,000 |  | 13,371,000
Total Current Loans | 77,374,000 |  | 80,441,000
Total loans | 80,733,000 |  | 93,812,000
Accruing Loans 90 or More Days Past Due | 0 |  | 0
Non-accrual loans | 10,866,000 |  | 13,257,000
Real Estate Loans - Single-family residential [Member] |  |  |
Financing receivable, recorded investment, past due [Line Items] |  |  |
Loans 30-89 Days Past Due | 8,145,000 |  | 16,536,000
Loans 90 or More Days Past Due | 4,758,000 |  | 6,189,000
Total Past Due Loans | 12,903,000 |  | 22,725,000
Total Current Loans | 236,264,000 |  | 244,326,000
Total loans | 249,167,000 |  | 267,051,000
Accruing Loans 90 or More Days Past Due | 2,396,000 |  | 2,709,000
Non-accrual loans | 4,255,000 |  | 5,522,000
Real estate loans - Commercial [Member] |  |  |
Financing receivable, recorded investment, past due [Line Items] |  |  |
Loans 30-89 Days Past Due | 743,000 |  | 1,002,000
Loans 90 or More Days Past Due | 2,492,000 |  | 958,000
Total Past Due Loans | 3,235,000 |  | 1,960,000
Total Current Loans | 200,368,000 |  | 212,455,000
Total loans | 203,603,000 |  | 214,415,000
Accruing Loans 90 or More Days Past Due | 0 |  | 0
Non-accrual loans | 3,239,000 |  | 2,451,000
Real Estate Loans - Multifamily and farmland [Member] |  |  |
Financing receivable, recorded investment, past due [Line Items] |  |  |
Loans 30-89 Days Past Due | 209,000 |  | 13,000
Loans 90 or More Days Past Due | 0 |  | 0
Total Past Due Loans | 209,000 |  | 13,000
Total Current Loans | 4,755,000 |  | 4,780,000
Total loans | 4,964,000 |  | 4,793,000
Accruing Loans 90 or More Days Past Due | 0 |  | 0
Total real estate loans [Member] |  |  |
Financing receivable, recorded investment, past due [Line Items] |  |  |
Loans 30-89 Days Past Due | 10,610,000 |  | 27,584,000
Loans 90 or More Days Past Due | 9,096,000 |  | 10,485,000
Total Past Due Loans | 19,706,000 |  | 38,069,000
Total Current Loans | 518,761,000 |  | 542,002,000
Total loans | 538,467,000 |  | 580,071,000
Accruing Loans 90 or More Days Past Due | 2,396,000 |  | 2,709,000
Non-accrual loans | 18,360,000 |  | 21,230,000
Commercial (not secured by real estate) [Member] |  |  |
Financing receivable, recorded investment, past due [Line Items] |  |  |
Loans 30-89 Days Past Due | 854,000 |  | 576,000
Loans 90 or More Days Past Due | 18,000 |  | 9,000
Total Past Due Loans | 872,000 |  | 585,000
Total Current Loans | 59,486,000 |  | 60,061,000
Total loans | 60,358,000 |  | 60,646,000
Accruing Loans 90 or More Days Past Due | 0 |  | 0
Non-accrual loans | 457,000 |  | 403,000
Farm loans (not secured by real estate) [Member] |  |  |
Financing receivable, recorded investment, past due [Line Items] |  |  |
Loans 30-89 Days Past Due | 0 |  |
Loans 90 or More Days Past Due | 0 |  |
Total Past Due Loans | 0 |  |
Total Current Loans | 12,000 |  |
Total loans | 12,000 |  | 0
Accruing Loans 90 or More Days Past Due | 0 |  |
Consumer loans (not secured by real estate) [Member] |  |  |
Financing receivable, recorded investment, past due [Line Items] |  |  |
Loans 30-89 Days Past Due | 119,000 |  | 116,000
Loans 90 or More Days Past Due | 5,000 |  | 36,000
Total Past Due Loans | 124,000 |  | 152,000
Total Current Loans | 10,179,000 |  | 10,338,000
Total loans | 10,303,000 |  | 10,490,000
Accruing Loans 90 or More Days Past Due | 2,000 |  | 0
Non-accrual loans | 22,000 |  | 152,000
All other loans (not secured by real estate) [Member] |  |  |
Financing receivable, recorded investment, past due [Line Items] |  |  |
Loans 30-89 Days Past Due | 0 |  | 0
Loans 90 or More Days Past Due | 0 |  | 0
Total Past Due Loans | 0 |  | 0
Total Current Loans | 16,642,000 |  | 19,290,000
Total loans | 16,642,000 |  | 19,290,000
Accruing Loans 90 or More Days Past Due | $ 0 |  | $ 0

X
- Definition Recognizing interest income on impaired financing receivables, including how cash receipts are recorded, the policy for determining which loans the entity assess for impairment, and the factors the creditor considered in determining that the financing receivable is impaired. + References No definition available. + Details
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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 + Details
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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
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- Definition Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph g -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. + Details
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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Paragraph 8 -Subparagraph e -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 116 -IssueDate 2006-05-01 -Chapter 8 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph e -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. + Details
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