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Note 6 - Loans Acquired - Age Analysis of Past Due Acquired Loans, Excluding Loans Covered by Loss Share (Details) - USD ($) | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Loans | $ 6,303,000,000 | $ 5,633,000,000
Acquired Loans [Member] |  |
Past Due | 15,391,000 | 37,940,000
Current | 1,076,648,000 | 1,267,743,000
Loans | 1,092,039,000 | 1,305,683,000
90 Days Past Due & Accruing | 7,000 | 11,000
Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 6,183,000 | 12,668,000
Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 9,208,000 | 25,272,000
Consumer Portfolio Segment [Member] |  |
Loans | 494,262,000 | 488,563,000
Consumer Portfolio Segment [Member] | Other Loans [Member] |  |
Loans | 317,946,000 | 303,972,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] |  |
Past Due | 562,000 | 760,000
Current | 29,100,000 | 48,917,000
Loans | 29,662,000 | 49,677,000
90 Days Past Due & Accruing | 7,000 |
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 401,000 | 571,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 161,000 | 189,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] |  |
Past Due | 562,000 | 760,000
Current | 29,100,000 | 48,917,000
Loans | 29,662,000 | 49,677,000
90 Days Past Due & Accruing | 7,000 |
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 401,000 | 571,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 161,000 | 189,000
Commercial Real Estate Portfolio Segment [Member] |  |
Loans | 3,794,900,000 | 3,028,079,000
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |
Loans | 515,274,000 | 336,759,000
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] |  |
Loans | 1,048,403,000 | 904,245,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] |  |
Past Due | 12,827,000 | 34,256,000
Current | 965,482,000 | 1,136,615,000
Loans | 978,309,000 | 1,170,871,000
90 Days Past Due & Accruing |  | 11,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 5,610,000 | 11,326,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 7,217,000 | 22,930,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] |  |
Past Due | 3,476,000 | 13,577,000
Current | 562,517,000 | 676,531,000
Loans | 565,993,000 | 690,108,000
90 Days Past Due & Accruing |  |
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 806,000 | 2,836,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 2,670,000 | 10,741,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] |  |
Past Due | 1,439,000 | 7,464,000
Current | 47,081,000 | 50,123,000
Loans | 48,520,000 | 57,587,000
90 Days Past Due & Accruing |  |
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 19,000 | 132,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 1,420,000 | 7,332,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member] |  |
Past Due | 7,912,000 | 13,215,000
Current | 355,884,000 | 409,961,000
Loans | 363,796,000 | 423,176,000
90 Days Past Due & Accruing |  | 11,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 4,785,000 | 8,358,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 3,127,000 | 4,857,000
Commercial Portfolio Segment [Member] |  |
Loans | 896,809,000 | 789,903,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member] |  |
Loans | 688,960,000 | 639,525,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] |  |
Loans | 207,849,000 | 150,378,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] |  |
Past Due | 2,002,000 | 2,924,000
Current | 82,066,000 | 82,211,000
Loans | 84,068,000 | 85,135,000
90 Days Past Due & Accruing |  |
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 172,000 | 771,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 1,830,000 | 2,153,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] |  |
Past Due | 1,944,000 | 2,876,000
Current | 68,676,000 | 78,961,000
Loans | 70,620,000 | 81,837,000
90 Days Past Due & Accruing |  |
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 156,000 | 723,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 1,788,000 | 2,153,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] |  |
Past Due | 58,000 | 48,000
Current | 13,390,000 | 3,250,000
Loans | 13,448,000 | 3,298,000
90 Days Past Due & Accruing |  |
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 16,000 | 48,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | $ 42,000 |

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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
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