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Note 4 - Fair Value Measurements (Detail) - Additional Quantitative Information About Assets measured at fair value (USD $) In Thousands, unless otherwise specified |  |  | 9 Months Ended |  | 9 Months Ended |
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Sep. 30, 2012 | Dec. 31, 2011 | Sep. 30, 2012 Appraisal of Collateral - Appraisal Adjustments [Member] Minimum [Member] | Sep. 30, 2012 Appraisal of Collateral - Appraisal Adjustments [Member] Maximum [Member] | Sep. 30, 2012 Appraisal of Collateral - Appraisal Adjustments [Member] | Sep. 30, 2012 Appraisal of Collateral Liquidation Expenses [Member] Minimum [Member] | Sep. 30, 2012 Appraisal of Collateral Liquidation Expenses [Member] Maximum [Member] | Sep. 30, 2012 Appraisal of Collateral [Member]
Estimate (in Dollars) | $ 17,233 | $ 18,237 |  |  | $ 14,258 | [1],[2] |  |  |  |
Range |  |  | 0.00% | (75.00%) |  |  | 0.00% | (45.80%) |  |
Other real estate owned (in Dollars) |  |  |  |  |  |  |  |  | $ 2,332 | [1],[3]
[1] | Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable.
[2] | Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal.
[3] | Includes qualitative adjustments by management and estimated liquidation expenses.

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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524 + Details
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- Definition Carrying amount as of the balance sheet date of other real estate and foreclosed assets. Other real estate may include real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. Foreclosed assets include all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(4)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 2, 3, 4 -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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