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Note 2 - Securities (Details) (USD $) | Mar. 31, 2014 | Dec. 31, 2013
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Note 2 - Securities (Details) [Line Items] |  |
Number Of Mutual Funds With Unrealized Losses | 1 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | $ 88,370,000 | $ 88,446,000
Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments | 7,700,000 |
Available-for-sale Securities | 141,097,000 | 131,178,000
Securities Of Specific Issuer Other Than Government And Its Agencies Maximum Percentage On Stockholders Equity | 10.00% |
Debt Securities [Member] |  |
Note 2 - Securities (Details) [Line Items] |  |
Number Of Debt Securities With Unrealized Losses | 63 |
State Of Michigan and all its Political Subdivisions [Member] |  |
Note 2 - Securities (Details) [Line Items] |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 17,400,000 | 17,400,000
Available-for-sale Securities | 17,800,000 | 17,800,000
US Government Agency Debt Obligations And Mortgage-Backed Securities [Member] |  |
Note 2 - Securities (Details) [Line Items] |  |
Available-for-sale Securities, Restricted | $ 105,200,000 | $ 94,400,000

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- Definition The accumulated losses in investments that are classed as available fore sale and are in a continuous loss position. + References No definition available. + Details
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- Definition Number of debt securities with unrealized losses. + References No definition available. + Details
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- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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