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Note 14 - Financial Instruments with Off-Balance Sheet Risk (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Note 14 - Financial Instruments with Off-Balance Sheet Risk (Details) [Line Items] |  |  |
Payments for Origination of Mortgage Loans Held-for-sale | $ 9,104 us-gaap_PaymentsForOriginationOfMortgageLoansHeldForSale | $ 16,737 us-gaap_PaymentsForOriginationOfMortgageLoansHeldForSale | $ 22,747 us-gaap_PaymentsForOriginationOfMortgageLoansHeldForSale
Proceeds from Sale of Mortgage Loans Held-for-sale | 10,089 us-gaap_ProceedsFromSaleOfMortgageLoansHeldForSale | 18,257 us-gaap_ProceedsFromSaleOfMortgageLoansHeldForSale | 22,574 us-gaap_ProceedsFromSaleOfMortgageLoansHeldForSale
Potential Default Period After Sale of Loans to Investor | 12 months |  |
Disposal Group, Including Discontinued Operation, Mortgage Loans | 291 us-gaap_LoansHeldForSaleMortgages | 1,276 us-gaap_LoansHeldForSaleMortgages |
Cash, Uninsured Amount | 0 us-gaap_CashUninsuredAmount |  |
Interest Rate Lock Commitments [Member] |  |  |
Note 14 - Financial Instruments with Off-Balance Sheet Risk (Details) [Line Items] |  |  |
Other Commitment | $ 424 us-gaap_OtherCommitment / us-gaap_FinancialInstrumentAxis = us-gaap_InterestRateLockCommitmentsMember |  |

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- Definition The period during which the mortgagor defaults after the sale of loans to the investor. + References No definition available. + Details
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- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
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- Definition Amount classified as mortgage loans attributable to disposal group held for sale or disposed of. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 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 210.9-03.7(a)(3)) -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 948 -SubTopic 310 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6490309&loc=d3e48678-111004 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Permanent Investor -URI http://asc.fasb.org/extlink&oid=6520390 + Details
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- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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- Definition The amount of cash paid for the origination of mortgages that are held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3461-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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