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Note 3 - Loans Leases Receivable - Loans by Internally Assigned Risk Rating (Details) - USD ($) | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Loans | $ 2,427,885,239 | $ 2,397,414,282
Commercial Portfolio Segment [Member] |  |
Loans | 851,578,347 | 827,637,263
Commercial Portfolio Segment [Member] | Pass [Member] |  |
Loans | 816,089,950 | 796,568,451
Commercial Portfolio Segment [Member] | Special Mention [Member] |  |
Loans | 7,820,608 | 6,305,772
Commercial Portfolio Segment [Member] | Substandard [Member] |  |
Loans | 27,667,789 | 24,763,040
Commercial Portfolio Segment [Member] | Doubtful [Member] |  |
Loans |  |
Commercial Real Estate Portfolio Segment [Member] |  |
Loans | 1,106,841,721 | 1,093,458,860
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate Loans [Member] |  |
Loans | 316,902,218 | 332,387,621
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |
Loans | 171,901,708 | 165,149,491
Commercial Real Estate Portfolio Segment [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member] |  |
Loans | 618,037,795 | 595,921,748
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Owner Occupied Commercial Real Estate Loans [Member] |  |
Loans | 298,438,590 | 314,447,662
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member] |  |
Loans | 164,958,396 | 158,108,465
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member] |  |
Loans | 605,282,623 | 582,854,048
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Owner Occupied Commercial Real Estate Loans [Member] |  |
Loans | 8,839,425 | 7,559,380
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member] |  |
Loans | 1,780,000 | 1,780,000
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member] |  |
Loans | 4,400,764 | 4,437,122
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Owner Occupied Commercial Real Estate Loans [Member] |  |
Loans | 9,624,203 | 10,380,369
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member] |  |
Loans | 5,163,312 | 5,261,026
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member] |  |
Loans | 8,354,408 | 8,630,578
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Owner Occupied Commercial Real Estate Loans [Member] |  |
Loans |  | 210
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Construction Loans [Member] |  |
Loans |  |
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member] |  |
Loans |  |
Commercial and Commercial Real Estate Portfolio Segments [Member] |  |
Loans | $ 1,958,420,068 | $ 1,921,096,123
As a % of Total | 100.00% | 100.00%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Pass [Member] |  |
Loans | $ 1,884,769,559 | $ 1,851,978,626
As a % of Total | 96.24% | 96.40%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Special Mention [Member] |  |
Loans | $ 22,840,797 | $ 20,082,274
As a % of Total | 1.17% | 1.05%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Substandard [Member] |  |
Loans | $ 50,809,712 | $ 49,035,013
As a % of Total | 2.59% | 2.55%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Doubtful [Member] |  |
Loans |  | $ 210
As a % of Total | 0.00% | 0.00%

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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://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=82891408&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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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