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Note 6 - Loans Acquired - Carrying Value of all Acquired Impaired Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Acquired loans | [1] | $ 1,092,039 | $ 1,305,683
Consumer Portfolio Segment [Member] |  |  |
Acquired loans |  | 29,662 | 49,677
Commercial Real Estate Portfolio Segment [Member] |  |  |
Acquired loans |  | 978,309 | 1,170,871
Commercial Portfolio Segment [Member] |  |  |
Acquired loans |  | 84,068 | 85,135
Other Loans [Member] | Consumer Portfolio Segment [Member] |  |  |
Acquired loans |  | 29,662 | 49,677
Other Loans [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Acquired loans |  | 565,993 | 690,108
Construction Loans [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Acquired loans |  | 48,520 | 57,587
Single Family Residential Loans [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Acquired loans |  | 363,796 | 423,176
Commercial Loans [Member] | Commercial Portfolio Segment [Member] |  |  |
Acquired loans |  | 70,620 | 81,837
Agricultural Loans [Member] | Commercial Portfolio Segment [Member] |  |  |
Acquired loans |  | $ 13,448 | $ 3,298
[1] | Loans acquired are reported net of a $391,000 and $954,000 allowance at September 30, 2017 and December 31, 2016, respectively.

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