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Note 10 - Cash Surrender Value of Life Insurance (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Note 10 - Cash Surrender Value of Life Insurance (Details) [Line Items] |  |  |
Cash Surrender Value of Life Insurance | $ 0 | $ 0 |
Bank Owned Life Insurance Income | $ 0 | 439,000 | $ 523,000
Non-interest Income [Member] |  |  |
Note 10 - Cash Surrender Value of Life Insurance (Details) [Line Items] |  |  |
Life Insurance Policies, Charges |  | 455,000 |
Non-interest Expense [Member] |  |  |
Note 10 - Cash Surrender Value of Life Insurance (Details) [Line Items] |  |  |
Life Insurance Policies, Charges |  | 437,000 |
Provision for Income Taxes [Member] |  |  |
Note 10 - Cash Surrender Value of Life Insurance (Details) [Line Items] |  |  |
Life Insurance Policies, Charges |  | $ 1,700,000 |

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- Definition Charges made to income that originate from liquidation of life insurance policies held by the bank. + References No definition available. + Details
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- Definition Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. + 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 + Details
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