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Note 3 - Loans and Allowance for Loan Losses - Components of Loan Portfolio (Details) - USD ($) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017
Loans | $ 2,636,856,000 | $ 2,558,552,000
Percent of portfolio | 100.00% | 100.00%
Period increase (decrease) | 3.10% |
Commercial Portfolio Segment [Member] |  |
Loans | $ 2,261,970,000 | $ 2,203,568,000
Percent of portfolio | 85.80% | 86.10%
Period increase (decrease) | 2.70% |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Loans | $ 776,995,000 | $ 753,764,000
Percent of portfolio | 29.50% | 29.40%
Period increase (decrease) | 3.10% |
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Loans | $ 37,868,000 | $ 29,873,000
Percent of portfolio | 1.50% | 1.20%
Period increase (decrease) | 26.80% |
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
Loans | $ 533,075,000 | $ 526,328,000
Percent of portfolio | 20.20% | 20.60%
Period increase (decrease) | 1.30% |
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Loans | $ 818,376,000 | $ 791,685,000
Percent of portfolio | 31.00% | 30.90%
Period increase (decrease) | 3.40% |
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Loans | $ 95,656,000 | $ 101,918,000
Percent of portfolio | 3.60% | 4.00%
Period increase (decrease) | (6.10%) |
Retail Portfolio Segment [Member] |  |
Loans | $ 374,886,000 | $ 354,984,000
Percent of portfolio | 14.20% | 13.90%
Period increase (decrease) | 5.60% |
Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |
Loans | $ 91,229,000 | $ 100,425,000
Percent of portfolio | 3.50% | 3.90%
Period increase (decrease) | (9.20%) |
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |
Loans | $ 283,657,000 | $ 254,559,000
Percent of portfolio | 10.70% | 10.00%
Period increase (decrease) | 11.40% |
Originated Loan [Member] |  |
Loans | $ 2,296,204,000 | $ 2,169,957,000
Percent of portfolio | 100.00% | 100.00%
Period increase (decrease) | 5.80% |
Originated Loan [Member] | Commercial Portfolio Segment [Member] |  |
Loans | $ 2,027,193,000 | $ 1,934,228,000
Percent of portfolio | 88.30% | 89.10%
Period increase (decrease) | 4.80% |
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Loans | $ 712,138,000 | $ 680,805,000
Percent of portfolio | 31.00% | 31.30%
Period increase (decrease) | 4.60% |
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Loans | $ 32,031,000 | $ 23,682,000
Percent of portfolio | 1.40% | 1.10%
Period increase (decrease) | 35.30% |
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
Loans | $ 477,696,000 | $ 456,065,000
Percent of portfolio | 20.80% | 21.00%
Period increase (decrease) | 4.70% |
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Loans | $ 743,102,000 | $ 708,824,000
Percent of portfolio | 32.40% | 32.70%
Period increase (decrease) | 4.80% |
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Loans | $ 62,226,000 | $ 64,852,000
Percent of portfolio | 2.70% | 3.00%
Period increase (decrease) | (4.00%) |
Originated Loan [Member] | Retail Portfolio Segment [Member] |  |
Loans | $ 269,011,000 | $ 235,729,000
Percent of portfolio | 11.70% | 10.90%
Period increase (decrease) | 14.10% |
Originated Loan [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |
Loans | $ 66,683,000 | $ 69,675,000
Percent of portfolio | 2.90% | 3.20%
Period increase (decrease) | (4.30%) |
Originated Loan [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |
Loans | $ 202,328,000 | $ 166,054,000
Percent of portfolio | 8.80% | 7.70%
Period increase (decrease) | 21.80% |
Acquired Loan [Member] |  |
Loans | $ 340,652,000 | $ 388,595,000
Percent of portfolio | 100.00% | 100.00%
Period increase (decrease) | (12.30%) |
Acquired Loan [Member] | Commercial Portfolio Segment [Member] |  |
Loans | $ 234,777,000 | $ 269,340,000
Percent of portfolio | 68.90% | 69.30%
Period increase (decrease) | (12.80%) |
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Loans | $ 64,857,000 | $ 72,959,000
Percent of portfolio | 19.00% | 18.80%
Period increase (decrease) | (11.10%) |
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Loans | $ 5,837,000 | $ 6,191,000
Percent of portfolio | 1.70% | 1.60%
Period increase (decrease) | (5.70%) |
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
Loans | $ 55,379,000 | $ 70,263,000
Percent of portfolio | 16.30% | 18.10%
Period increase (decrease) | (21.20%) |
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Loans | $ 75,274,000 | $ 82,861,000
Percent of portfolio | 22.10% | 21.30%
Period increase (decrease) | (9.20%) |
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Loans | $ 33,430,000 | $ 37,066,000
Percent of portfolio | 9.80% | 9.50%
Period increase (decrease) | (9.80%) |
Acquired Loan [Member] | Retail Portfolio Segment [Member] |  |
Loans | $ 105,875,000 | $ 119,255,000
Percent of portfolio | 31.10% | 30.70%
Period increase (decrease) | (11.20%) |
Acquired Loan [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |
Loans | $ 24,546,000 | $ 30,750,000
Percent of portfolio | 7.20% | 7.90%
Period increase (decrease) | (20.20%) |
Acquired Loan [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |
Loans | $ 81,329,000 | $ 88,505,000
Percent of portfolio | 23.90% | 22.80%
Period increase (decrease) | (8.10%) |

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
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