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Note 7 - Federal Home Loan Bank Advances (Details) (USD $) | Dec. 31, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2014 Minimum [Member] | Dec. 31, 2013 Minimum [Member] | Mar. 31, 2014 Maximum [Member] | Mar. 31, 2013 Maximum [Member]
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Note 7 - Federal Home Loan Bank Advances (Details) [Line Items] |  |  |  |  |  |  |
Long-term Federal Home Loan Bank Advances (in Dollars) |  | $ 45,000,000 | $ 45,000,000 |  |  |  |
Federal Home Loan Bank Advances Maturity Due Date Earlies |  | March 2017 | March 2017 |  |  |  |
Federal Home Loan Bank Advances Maturity Due Date Last |  | September 2017 | September 2017 |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate, Range from |  |  |  | 1.22% | 1.22% |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate, Range to |  |  |  |  |  | 1.51% | 1.51%
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate | 1.34% |  | 1.34% |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) |  | 179,000,000 |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars) |  | $ 129,000,000 |  |  |  |  |

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- Definition Describes the weighted average interest rate applicable to the specific 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 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: 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 3: 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition States the lowest interest rate applicable to any of the advances from the Federal Home Loan Bank 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 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: 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 + Details
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- Definition States the highest interest rate applicable to any of the advances from the Federal Home Loan Bank 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 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: 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 + 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 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 4: 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 + Details
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