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Note 10 - Commitments and Contingent Liabilities (Details) | Dec. 31, 2015 | Sep. 30, 2015 | Dec. 31, 2014 | Mar. 22, 2007 | Sep. 07, 2000
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Note 10 - Commitments and Contingent Liabilities (Details) [Line Items] |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 2.19% |  | 1.92% | 6.58% | 10.60%
Minimum [Member] |  |  |  |  |
Note 10 - Commitments and Contingent Liabilities (Details) [Line Items] |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.15% |  |  |
Minimum [Member] | Fixed Rate Commitments [Member] |  |  |  |  |
Note 10 - Commitments and Contingent Liabilities (Details) [Line Items] |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.75% |  |  |  |
Maximum [Member] |  |  |  |  |
Note 10 - Commitments and Contingent Liabilities (Details) [Line Items] |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.50% |  |  |
Maximum [Member] | Fixed Rate Commitments [Member] |  |  |  |  |
Note 10 - Commitments and Contingent Liabilities (Details) [Line Items] |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.25% |  |  |  |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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