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Note 7 - Federal Home Loan Bank Advances (Details) - USD ($) | Mar. 31, 2016 | Dec. 31, 2015
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Note 7 - Federal Home Loan Bank Advances (Details) [Line Items] |  |
Long-term Federal Home Loan Bank Advances (in Dollars) | $ 98,000,000 | $ 68,000,000
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) | 499,000,000 |
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars) | 401,000,000 |
Federal Home Loan Bank of Indianapolis [Member] |  |
Note 7 - Federal Home Loan Bank Advances (Details) [Line Items] |  |
Long-term Federal Home Loan Bank Advances (in Dollars) | $ 98,000,000 | $ 68,000,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate | 1.53% | 1.49%
Federal Home Loan Bank of Indianapolis [Member] | Minimum [Member] |  |
Note 7 - Federal Home Loan Bank Advances (Details) [Line Items] |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End | 1.22% | 1.22%
Federal Home Loan Bank of Indianapolis [Member] | Maximum [Member] |  |
Note 7 - Federal Home Loan Bank Advances (Details) [Line Items] |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End | 2.11% | 2.11%

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- Definition Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition States the interest rate applicable to Federal Home Loan Bank advances outstanding as of the Balance Sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64702-112823 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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