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Note 11 - Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2015
Disclosure Text Block [Abstract] |
Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
(dollars in thousands) |  | Quoted Prices (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Other Unobservable Inputs (Level 3) |  |  | Total (Fair Value) |
June 30, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U. S. Government agency securities |  | $ | - |  |  | $ | 59,703 |  |  | $ | - |  |  | $ | 59,703 |
Residential mortgage backed securities |  |  | - |  |  |  | 255,663 |  |  |  | - |  |  |  | 255,663 |
Municipal bonds |  |  | - |  |  |  | 92,838 |  |  |  | - |  |  |  | 92,838 |
Corporate bonds |  |  | - |  |  |  | 15,041 |  |  |  | - |  |  |  | 15,041 |
Other equity investments |  |  | 245 |  |  |  | - |  |  |  | 219 |  |  |  | 464 |
Loans held for sale |  |  | - |  |  |  | 132,683 |  |  |  | - |  |  |  | 132,683 |
Mortgage banking derivatives |  |  | - |  |  |  | - |  |  |  | 165 |  |  |  | 165 |
Interest rate swap derivatives |  |  | - |  |  |  | 3,181 |  |  |  | - |  |  |  | 3,181 |
Total assets measured at fair value on a recurring basis as of June 30, 2015 |  | $ | 245 |  |  | $ | 559,109 |  |  | $ | 384 |  |  | $ | 559,738 |
(dollars in thousands) |  | Quoted Prices (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Other Unobservable Inputs (Level 3) |  |  | Total (Fair Value) |
December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U. S. Government agency securities |  | $ | - |  |  | $ | 29,894 |  |  | $ | - |  |  | $ | 29,894 |
Residential mortgage backed securities |  |  | - |  |  |  | 240,320 |  |  |  | - |  |  |  | 240,320 |
Municipal bonds |  |  | - |  |  |  | 111,712 |  |  |  | - |  |  |  | 111,712 |
Other equity investments |  |  | 198 |  |  |  | - |  |  |  | 219 |  |  |  | 417 |
Loans held for sale |  |  | - |  |  |  | 44,317 |  |  |  | - |  |  |  | 44,317 |
Mortgage banking derivatives |  |  | - |  |  |  | - |  |  |  | 146 |  |  |  | 146 |
Total assets measured at fair value on a recurring basis as of December 31, 2014 |  | $ | 198 |  |  | $ | 426,243 |  |  | $ | 365 |  |  | $ | 426,806 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] |
|  | Other Equity |  |  | Derivative |  |  |  |  |
(dollars in thousands) |  | Investments |  |  | Assets/(Liabilities) |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at December 31, 2014 |  | $ | 219 |  |  | $ | 146 |  |  | $ | 365 |
Realized gain (loss) included in earnings - net derivatives |  |  | - |  |  |  | 19 |  |  |  | 19 |
Principal redemption |  |  | - |  |  |  | - |  |  |  | - |
Ending balance at June 30, 2015 |  | $ | 219 |  |  | $ | 165 |  |  | $ | 384 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at December 31, 2014 |  | $ | - |  |  | $ | (250 | ) |  | $ | (250 | )
Realized gain (loss) included in earnings - net derivatives |  |  | - |  |  |  | 235 |  |  |  | 235 |
Principal redemption |  |  | - |  |  |  | - |  |  |  | - |
Ending balance at June 30, 2015 |  | $ | - |  |  | $ | (15 | ) |  | $ | (15 | )
|  | Other Equity |  |  | Derivative |  |  |  |  |
(dollars in thousands) |  | Investments |  |  | Assets/(Liabilities) |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at December 31, 2013 |  | $ | 219 |  |  | $ | - |  |  | $ | 219 |
Realized gain (loss) included in earnings - net derivatives |  |  | - |  |  |  | 146 |  |  |  | 146 |
Ending balance at December 31, 2014 |  | $ | 219 |  |  | $ | 146 |  |  | $ | 365 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at December 31, 2013 |  | $ | - |  |  | $ | - |  |  | $ | - |
Realized gain (loss) included in earnings - net derivatives |  |  | - |  |  |  | (250 | ) |  |  | (250 | )
Ending balance at December 31, 2014 |  | $ | - |  |  | $ | (250 | ) |  | $ | (250 | )
Fair Value Measurements, Nonrecurring [Table Text Block] |
(dollars in thousands) |  | Quoted Prices (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Other Unobservable Inputs (Level 3) |  |  | Total (Fair Value) |
June 30, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impaired loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | - |  |  | $ | 1,675 |  |  | $ | 4,214 |  |  | $ | 5,889 |
Income producing - commercial real estate |  |  | - |  |  |  | 1,263 |  |  |  | 8,098 |  |  |  | 9,361 |
Owner occupied - commercial real estate |  |  | - |  |  |  | 725 |  |  |  | 720 |  |  |  | 1,445 |
Real estate mortgage - residential |  |  | - |  |  |  | - |  |  |  | 338 |  |  |  | 338 |
Construction - commercial and residential |  |  | - |  |  |  | 35 |  |  |  | 4,803 |  |  |  | 4,838 |
Home equity |  |  | - |  |  |  | - |  |  |  | 594 |  |  |  | 594 |
Other consumer |  |  | - |  |  |  | - |  |  |  | 18 |  |  |  | 18 |
Other real estate owned |  |  | - |  |  |  | 10,715 |  |  |  | - |  |  |  | 10,715 |
Total assets measured at fair value on a nonrecurring basis as of June 30, 2015 |  | $ | - |  |  | $ | 14,413 |  |  | $ | 18,785 |  |  | $ | 33,198 |
(dollars in thousands) |  | Quoted Prices (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Other Unobservable Inputs (Level 3) |  |  | Total (Fair Value) |
December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impaired loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | - |  |  | $ | 781 |  |  | $ | 7,171 |  |  | $ | 7,952 |
Income producing - commercial real estate |  |  | - |  |  |  | 703 |  |  |  | 1,199 |  |  |  | 1,902 |
Owner occupied - commercial real estate |  |  | - |  |  |  | - |  |  |  | 824 |  |  |  | 824 |
Real estate mortgage - residential |  |  | - |  |  |  | - |  |  |  | 346 |  |  |  | 346 |
Construction - commercial and residential |  |  | - |  |  |  | - |  |  |  | 3,297 |  |  |  | 3,297 |
Home equity |  |  | - |  |  |  | 5 |  |  |  | 963 |  |  |  | 968 |
Other consumer |  |  | - |  |  |  | - |  |  |  | 13 |  |  |  | 13 |
Other real estate owned |  |  | - |  |  |  | 9,184 |  |  |  | 4,040 |  |  |  | 13,224 |
Total assets measured at fair value on a nonrecurring basis as of December 31, 2014 |  | $ | - |  |  | $ | 10,673 |  |  | $ | 17,853 |  |  | $ | 28,526 |
Fair Value, by Balance Sheet Grouping [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Fair Value Measurements |
|  |  |  |  |  |  |  |  |  | Quoted Prices in Active Markets for Identical Assets or Liabilities |  |  | Significant Other Observable Inputs |  |  | Significant Unobservable Inputs |
(dollars in thousands) |  | Carrying Value |  |  | Fair Value |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
June 30, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and due from banks |  | $ | 10,284 |  |  | $ | 10,284 |  |  | $ | - |  |  | $ | 10,284 |  |  | $ | - |
Federal funds sold |  |  | 6,276 |  |  |  | 6,276 |  |  |  | - |  |  |  | 6,276 |  |  |  | - |
Interest bearing deposits with other banks |  |  | 380,336 |  |  |  | 380,336 |  |  |  | - |  |  |  | 380,336 |  |  |  | - |
Investment securities |  |  | 423,709 |  |  |  | 423,709 |  |  |  | 245 |  |  |  | 423,245 |  |  |  | 219 |
Federal Reserve and Federal Home Loan Bank stock |  |  | 16,828 |  |  |  | 16,828 |  |  |  | - |  |  |  | 16,828 |  |  |  | - |
Loans held for sale |  |  | 132,683 |  |  |  | 132,683 |  |  |  | - |  |  |  | 132,683 |  |  |  | - |
Loans |  |  | 4,550,897 |  |  |  | 4,557,057 |  |  |  | - |  |  |  | 3,698 |  |  |  | 4,553,359 |
Bank owned life insurance |  |  | 57,889 |  |  |  | 57,889 |  |  |  | - |  |  |  | 57,889 |  |  |  | - |
Annuity investment |  |  | 12,146 |  |  |  | 12,146 |  |  |  | - |  |  |  | 12,146 |  |  |  | - |
Mortgage banking derivatives |  |  | 165 |  |  |  | 165 |  |  |  | - |  |  |  | - |  |  |  | 165 |
Interst rate swap derivatives |  |  | 3,181 |  |  |  | 3,181 |  |  |  | - |  |  |  | 3,181 |  |  |  | - |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noninterest bearing deposits |  |  | 1,370,590 |  |  |  | 1,370,590 |  |  |  | - |  |  |  | 1,370,590 |  |  |  | - |
Interest bearing deposits |  |  | 2,659,719 |  |  |  | 3,454,590 |  |  |  | - |  |  |  | 3,454,590 |  |  |  | - |
Certificates of deposit |  |  | 795,124 |  |  |  | 794,871 |  |  |  | - |  |  |  | 794,871 |  |  |  | - |
Customer repurchase agreements |  |  | 53,394 |  |  |  | 53,394 |  |  |  | - |  |  |  | 53,394 |  |  |  | - |
Borrowings |  |  | 127,444 |  |  |  | 127,476 |  |  |  | - |  |  |  | 127,476 |  |  |  | - |
Mortgage banking derivatives |  |  | 15 |  |  |  | 15 |  |  |  | - |  |  |  | - |  |  |  | 15 |
December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and due from banks |  | $ | 9,097 |  |  | $ | 9,097 |  |  | $ | - |  |  | $ | 9,097 |  |  | $ | - |
Federal funds sold |  |  | 3,516 |  |  |  | 3,516 |  |  |  | - |  |  |  | 3,516 |  |  |  | - |
Interest bearing deposits with other banks |  |  | 243,412 |  |  |  | 243,412 |  |  |  | - |  |  |  | 243,412 |  |  |  | - |
Investment securities |  |  | 382,343 |  |  |  | 382,343 |  |  |  | 198 |  |  |  | 381,926 |  |  |  | 219 |
Federal Reserve and Federal Home Loan Bank stock |  |  | 22,560 |  |  |  | 22,560 |  |  |  | - |  |  |  | 22,560 |  |  |  | - |
Loans held for sale |  |  | 44,317 |  |  |  | 44,669 |  |  |  | - |  |  |  | 44,669 |  |  |  | - |
Loans |  |  | 4,312,399 |  |  |  | 4,314,618 |  |  |  | - |  |  |  | 1,489 |  |  |  | 4,313,129 |
Bank owned life insurance |  |  | 56,594 |  |  |  | 56,594 |  |  |  | - |  |  |  | 56,594 |  |  |  | - |
Annuity investment |  |  | 11,277 |  |  |  | 11,277 |  |  |  | - |  |  |  | 11,277 |  |  |  | - |
Mortgage banking derivatives |  |  | 146 |  |  |  | 146 |  |  |  | - |  |  |  | - |  |  |  | 146 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noninterest bearing deposits |  |  | 1,175,799 |  |  |  | 1,175,799 |  |  |  | - |  |  |  | 1,175,799 |  |  |  | - |
Interest bearing deposits |  |  | 2,446,228 |  |  |  | 3,134,295 |  |  |  | - |  |  |  | 3,134,295 |  |  |  | - |
Certificates of deposit |  |  | 688,741 |  |  |  | 688,067 |  |  |  | - |  |  |  | 688,067 |  |  |  | - |
Customer repurchase agreements |  |  | 61,120 |  |  |  | 61,120 |  |  |  | - |  |  |  | 61,120 |  |  |  | - |
Borrowings |  |  | 280,420 |  |  |  | 281,958 |  |  |  | - |  |  |  | 281,958 |  |  |  | - |
Mortgage banking derivatives |  |  | 250 |  |  |  | 250 |  |  |  | - |  |  |  | - |  |  |  | 250 |

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19296-110258 + Details
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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19279-110258 + Details
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