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Note 5 - Loans Acquired - Age Analysis of Past Due Acquired Loans, Excluding Loans Covered by Loss Share (Details) - USD ($) | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Loans and Leases Receivable, Gross | $ 5,630,000,000 | $ 4,920,000,000
Acquired Loans [Member] |  |
Past Due | 37,940,000 | 51,039,000
Current | 1,267,743,000 | 1,621,862,000
Loans and Leases Receivable, Gross | 1,305,683,000 | 1,672,901,000
90 Days Past Due & Accruing | 11,000 | 3,224,000
Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 12,668,000 | 26,078,000
Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 25,272,000 | 24,961,000
Consumer Portfolio Segment [Member] |  |
Loans and Leases Receivable, Gross | 488,563,000 | 385,668,000
Consumer Portfolio Segment [Member] | Other Loans [Member] |  |
Loans and Leases Receivable, Gross | 303,972,000 | 208,380,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] |  |
Past Due | 760,000 | 948,000
Current | 48,917,000 | 74,658,000
Loans and Leases Receivable, Gross | 49,677,000 | 75,606,000
90 Days Past Due & Accruing |  | 57,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 571,000 | 826,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 189,000 | 122,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] |  |
Past Due | 760,000 | 948,000
Current | 48,917,000 | 74,658,000
Loans and Leases Receivable, Gross | 49,677,000 | 75,606,000
90 Days Past Due & Accruing |  | 57,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 571,000 | 826,000
Consumer Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 189,000 | 122,000
Commercial Real Estate Portfolio Segment [Member] |  |
Loans and Leases Receivable, Gross | 3,028,079,000 | 2,204,992,000
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |
Loans and Leases Receivable, Gross | 336,759,000 | 279,740,000
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] |  |
Loans and Leases Receivable, Gross | 904,245,000 | 696,180,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] |  |
Past Due | 34,256,000 | 45,248,000
Current | 1,136,615,000 | 1,386,941,000
Loans and Leases Receivable, Gross | 1,170,871,000 | 1,432,189,000
90 Days Past Due & Accruing | 11,000 | 1,859,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 11,326,000 | 23,139,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 22,930,000 | 22,109,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] |  |
Past Due | 13,577,000 | 20,720,000
Current | 676,531,000 | 833,348,000
Loans and Leases Receivable, Gross | 690,108,000 | 854,068,000
90 Days Past Due & Accruing |  | 203,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Other Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 2,836,000 | 12,910,000
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 | 10,741,000 | 7,810,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] |  |
Past Due | 7,464,000 | 10,185,000
Current | 50,123,000 | 66,934,000
Loans and Leases Receivable, Gross | 57,587,000 | 77,119,000
90 Days Past Due & Accruing |  | 410,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Construction Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 132,000 | 736,000
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 | 7,332,000 | 9,449,000
Commercial Real Estate Portfolio Segment [Member] | Acquired Loans [Member] | Single Family Residential Loans [Member] |  |
Past Due | 13,215,000 | 14,343,000
Current | 409,961,000 | 486,659,000
Loans and Leases Receivable, Gross | 423,176,000 | 501,002,000
90 Days Past Due & Accruing | 11,000 | 1,246,000
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 | 8,358,000 | 9,493,000
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 | 4,857,000 | 4,850,000
Commercial Portfolio Segment [Member] |  |
Loans and Leases Receivable, Gross | 789,903,000 | 648,679,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member] |  |
Loans and Leases Receivable, Gross | 639,525,000 | 500,116,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] |  |
Loans and Leases Receivable, Gross | 150,378,000 | 148,563,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] |  |
Past Due | 2,924,000 | 4,843,000
Current | 82,211,000 | 160,263,000
Loans and Leases Receivable, Gross | 85,135,000 | 165,106,000
90 Days Past Due & Accruing |  | 1,308,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 771,000 | 2,113,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 2,153,000 | 2,730,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] |  |
Past Due | 2,876,000 | 4,333,000
Current | 78,961,000 | 150,200,000
Loans and Leases Receivable, Gross | 81,837,000 | 154,533,000
90 Days Past Due & Accruing |  | 912,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 723,000 | 1,999,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Commercial Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due | 2,153,000 | 2,334,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] |  |
Past Due | 48,000 | 510,000
Current | 3,250,000 | 10,063,000
Loans and Leases Receivable, Gross | 3,298,000 | 10,573,000
90 Days Past Due & Accruing |  | 396,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |
Past Due | 48,000 | 114,000
Commercial Portfolio Segment [Member] | Acquired Loans [Member] | Agricultural Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Past Due |  | $ 396,000

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