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Note 10 - Fair Value Measurements (Details) - Fair Values of Financial Instruments (USD $) | Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2013
--- | --- | --- | ---
Assets |  |  |
Carrying Value-Cash and due from banks | $ 8,602,000 | $ 9,577,000 | $ 7,765,000
Fair Value-Cash and due from banks | 8,602,000 | 9,577,000 |
Carrying Value Federal funds sold | 9,480,000 | 5,695,000 | 10,634,000
Fair Value Federal funds sold | 9,480,000 | 5,695,000 | 10,634,000
Carrying Value Interest bearing deposits with other banks | 97,400,000 | 291,688,000 | 172,849,000
Fair Value Interest bearing deposits with other banks | 97,400,000 | 291,688,000 | 172,849,000
Carrying Value Investment securities | 378,990,000 | 378,133,000 | 335,779,000
Fair Value Investment securities | 378,990,000 | 378,133,000 | 335,779,000
Carrying Value Federal Reserve and Federal Home Loan Bank stock | 10,626,000 | 11,272,000 |
Fair Value Federal Reserve and Federal Home Loan Bank stock | 10,626,000 | 11,272,000 |
Carrying Value Loans held for sale | 35,411,000 | 42,030,000 | 104,767,000
Fair Value Loans held for sale | 35,411,000 | 42,030,000 |
Carrying Value Loans | 3,279,429,000 | 2,945,158,000 | 2,691,358,000
Fair Value Loans | 3,312,300,000 | 2,979,180,000 |
Carrying Value Bank owned life insurance | 40,361,000 | 39,738,000 | 29,324,000
Fair Value Bank owned life insurance | 40,361,000 | 39,738,000 | 29,324,000
Carrying Value Annuity investment | 11,196,000 | 11,227,000 |
Fair Value Annuity investment | 11,196,000 | 11,227,000 |
Derivative assets | 223,000 |  | 0
Derivative assets | 223,000 |  | 0
Liabilities |  |  |
Carrying Value Noninterest bearing deposits | 3,367,927,000 | 3,225,414,000 | 2,888,236,000
Carrying Value Borrowings | 99,946,000 | 119,771,000 |
Fair Value Borrowings | 101,019,000 | 120,764,000 |
Derivative liabilites | 159,000 |  | 0
Derivative liabilites | 159,000 |  | 0
Fair Value, Inputs, Level 1 [Member] |  |  |
Assets |  |  |
Carrying Value Investment securities | 168,000 | 165,000 |
Fair Value Investment securities | 168,000 | 165,000 |
Fair Value, Inputs, Level 2 [Member] |  |  |
Assets |  |  |
Fair Value-Cash and due from banks | 8,602,000 | 9,577,000 |
Carrying Value Federal funds sold | 9,480,000 | 5,695,000 |
Fair Value Federal funds sold | 9,480,000 | 5,695,000 |
Carrying Value Interest bearing deposits with other banks | 97,400,000 | 291,688,000 |
Fair Value Interest bearing deposits with other banks | 97,400,000 | 291,688,000 |
Carrying Value Investment securities | 378,603,000 | 377,749,000 |
Fair Value Investment securities | 378,603,000 | 377,749,000 |
Fair Value Federal Reserve and Federal Home Loan Bank stock | 10,626,000 | 11,272,000 |
Fair Value Loans held for sale | 35,411,000 | 42,030,000 |
Fair Value Loans | 4,786,000 | 14,249,000 |
Carrying Value Bank owned life insurance | 40,361,000 | 39,738,000 |
Fair Value Bank owned life insurance | 40,361,000 | 39,738,000 |
Carrying Value Annuity investment | 11,196,000 | 11,227,000 |
Fair Value Annuity investment | 11,196,000 | 11,227,000 |
Liabilities |  |  |
Fair Value Borrowings | 101,019,000 | 120,764,000 |
Fair Value, Inputs, Level 2 [Member] | Noninterest-bearing Deposits [Member] |  |  |
Liabilities |  |  |
Fair Value Noninterest bearing deposits | 945,485,000 | 849,409,000 |
Fair Value, Inputs, Level 2 [Member] | Interest-bearing Deposits [Member] |  |  |
Liabilities |  |  |
Fair Value Noninterest bearing deposits | 2,422,032,000 | 2,375,861,000 |
Fair Value, Inputs, Level 3 [Member] |  |  |
Assets |  |  |
Carrying Value Investment securities | 219,000 | 219,000 |
Fair Value Investment securities | 219,000 | 219,000 |
Fair Value Loans | 3,307,514,000 | 2,964,931,000 |
Derivative assets | 223,000 |  |
Derivative assets | 223,000 |  |
Liabilities |  |  |
Derivative liabilites | 159,000 |  |
Derivative liabilites | 159,000 |  |
Noninterest-bearing Deposits [Member] |  |  |
Liabilities |  |  |
Carrying Value Noninterest bearing deposits | 945,485,000 | 849,409,000 |
Fair Value Noninterest bearing deposits | 945,485,000 | 849,409,000 |
Interest-bearing Deposits [Member] |  |  |
Liabilities |  |  |
Carrying Value Noninterest bearing deposits | 2,422,442,000 | 2,376,005,000 |
Fair Value Noninterest bearing deposits | $ 2,422,032,000 | $ 2,375,861,000 |

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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 Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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- Definition For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.1) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1, 2, 3 -Article 9 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313 + Details
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