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Note 11 - Fair Value Measurements (Detail) (USD $) |  |  | 3 Months Ended |  |  |
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Mar. 31, 2013 | Dec. 31, 2012 | Mar. 31, 2013 Warrants Outstanding [Member] Minimum [Member] | Mar. 31, 2013 Warrants Outstanding [Member] Maximum [Member] | Mar. 31, 2013 Minimum [Member] | Mar. 31, 2013 Maximum [Member] | Mar. 31, 2012 Estimate of Fair Value, Fair Value Disclosure [Member] | Mar. 31, 2013 Accounts Receivable Collateral [Member] | Mar. 31, 2013 Inventory Collateral [Member]
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Warrants (in Dollars) | $ 98,000 | $ 104,000 |  |  |  |  |  |  |
Other Real Estate, Foreclosed Assets, and Repossessed Assets (in Dollars) | $ 45,316,000 | $ 46,384,000 |  |  |  |  | $ 45,300,000 |  |
Collateral Discount Rates |  |  |  |  |  |  |  | 45.00% | 65.00%
Estimated Sales Cost Applied To Collateral |  |  |  |  | 3.00% | 6.00% |  |  |
Expected Life of Warrants |  |  |  |  | 1 year | 4 years |  |  |
Fair Value Assumptions, Risk Free Interest Rate |  |  | 0.25% | 0.56% |  |  |  |  |
Fair Value Assumptions, Expected Volatility Rate |  |  | 12.60% | 17.40% |  |  |  |  |

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- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. + 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 (e) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Risk-free interest rate assumption used in valuing an instrument. + 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 (e) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + 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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