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Note 1 - Summary of Significant Accounting Policies (Detail) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Minimum Loan Balance for Loans Evaluated by Risk Categories (in Dollars) |  | $ 500 |
Percentage of Loan Portfolio | 100.00% | 100.00% |
Deposits with Other Federal Home Loan Banks (in Dollars) | 34,383 |  |
Repossessed Assets (in Dollars) | 3,667 | 4,256 |
Servicing Asset (in Dollars) | 450 | 430 |
Weighted Average Number of Shares Outstanding, Basic (in Shares) | 4,030,322 | 4,001,435 | 3,984,229
Restricted Cash and Cash Equivalents (in Dollars) | 37,964 | 44,018 |
Impaired Loans [Member] |  |  |
Minimum Loan Balance for Loans Evaluated by Risk Categories (in Dollars) | $ 200 |  |
Unsecured [Member] |  |  |
Percentage of Loan Portfolio | 4.87% |  |
Equipment Furniture and Fixtures [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 3 |  |
Equipment Furniture and Fixtures [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 8 |  |
Building and Building Improvements [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 7 |  |
Building and Building Improvements [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 39 |  |

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- Definition Carrying amount as of the balance sheet date of all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance; includes real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4437-111522 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 2, 9, 10, 11 -IssueDate 2006-05-01 -Chapter 11 -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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