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Note 3 - Loans - Impaired Loan Data (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016
Impaired balance with an allowance | $ 7,657 | $ 10,009 | $ 10,387
Average recorded investment with an allowance | 7,919 | 9,781 | 9,871
Interest income recognized with an allowance | 146 | 140 | 289
Interest income collected with an allowance | 149 | 138 | 291
Unpaid contractual principal balance | 25,893 | 33,950 | 31,292
Impaired balance | 25,067 | 32,833 | 30,661
Related allowance | 1,567 | 3,381 | 3,435
Average recorded investment | 28,038 | 30,880 | 31,375
Interest income recognized | 557 | 426 | 1,001
Interest income collected | 579 | 559 | 1,126
Unpaid contractual principal balance with no related allowance | 18,228 | 23,919 | 20,807
Impaired balance with no related allowance | 17,410 | 22,824 | 20,274
Average recorded investment with no related allowance | 20,119 | 21,099 | 21,504
Interest income recognized with no related allowance | 411 | 286 | 712
Interest income collected with no related allowance | 430 | 421 | 835
Unpaid contractual principal balance with an allowance | 7,665 | 10,031 | 10,485
Commercial and Agricultural Portfolio Segment [Member] | Commercial [Member] |  |  |
Impaired balance with an allowance |  |  |
Average recorded investment with an allowance |  | 50 | 30
Interest income recognized with an allowance |  |  |
Interest income collected with an allowance |  |  |
Unpaid contractual principal balance | 608 | 460 | 635
Impaired balance | 608 | 460 | 635
Related allowance |  |  |
Average recorded investment | 639 | 522 | 569
Interest income recognized | 11 | 4 | 24
Interest income collected | 15 | 5 | 27
Unpaid contractual principal balance with no related allowance | 608 | 460 | 635
Impaired balance with no related allowance | 608 | 460 | 635
Average recorded investment with no related allowance | 639 | 472 | 539
Interest income recognized with no related allowance | 11 | 4 | 24
Interest income collected with no related allowance | 15 | 5 | 27
Unpaid contractual principal balance with an allowance |  |  |
Commercial and Agricultural Portfolio Segment [Member] | Agricultural [Member] |  |  |
Impaired balance with an allowance | 0 | 0 | 0
Average recorded investment with an allowance | 0 | 0 | 0
Interest income recognized with an allowance | 0 | 0 | 0
Interest income collected with an allowance | 0 | 0 | 0
Unpaid contractual principal balance | 370 | 213 | 229
Impaired balance | 349 | 192 | 209
Related allowance | 0 | 0 | 0
Average recorded investment | 254 | 188 | 210
Interest income recognized | 11 | 9 | 9
Interest income collected | 13 | 13 | 12
Unpaid contractual principal balance with no related allowance | 370 | 213 | 229
Impaired balance with no related allowance | 349 | 192 | 209
Average recorded investment with no related allowance | 254 | 188 | 210
Interest income recognized with no related allowance | 11 | 9 | 9
Interest income collected with no related allowance | 13 | 13 | 12
Unpaid contractual principal balance with an allowance | 0 | 0 | 0
Real Estate Portfolio Segment [Member] | Commercial [Member] |  |  |
Impaired balance with an allowance | 7,169 | 8,695 | 8,467
Average recorded investment with an allowance | 6,714 | 8,305 | 8,340
Interest income recognized with an allowance | 135 | 127 | 239
Interest income collected with an allowance | 134 | 124 | 236
Unpaid contractual principal balance | 17,623 | 25,092 | 22,915
Impaired balance | 17,623 | 24,310 | 22,743
Related allowance | 1,517 | 2,886 | 3,022
Average recorded investment | 20,257 | 21,882 | 22,615
Interest income recognized | 361 | 398 | 806
Interest income collected | 356 | 394 | 796
Unpaid contractual principal balance with no related allowance | 10,454 | 16,383 | 14,358
Impaired balance with no related allowance | 10,454 | 15,615 | 14,276
Average recorded investment with no related allowance | 13,543 | 13,577 | 14,275
Interest income recognized with no related allowance | 226 | 271 | 567
Interest income collected with no related allowance | 222 | 270 | 560
Unpaid contractual principal balance with an allowance | 7,169 | 8,709 | 8,557
Real Estate Portfolio Segment [Member] | Commercial Construction [Member] |  |  |
Impaired balance with an allowance | 71 | 74 | 72
Average recorded investment with an allowance | 72 | 75 | 74
Interest income recognized with an allowance | 2 |  | 1
Interest income collected with an allowance | 2 |  | 2
Unpaid contractual principal balance | 173 | 527 | 263
Impaired balance | 173 | 502 | 263
Related allowance | 4 | 22 | 21
Average recorded investment | 231 | 1,005 | 772
Interest income recognized | 3 | 8 | 8
Interest income collected | 3 | 7 | 9
Unpaid contractual principal balance with no related allowance | 102 | 453 | 191
Impaired balance with no related allowance | 102 | 428 | 191
Average recorded investment with no related allowance | 159 | 930 | 698
Interest income recognized with no related allowance | 1 | 8 | 7
Interest income collected with no related allowance | 1 | 7 | 7
Unpaid contractual principal balance with an allowance | 71 | 74 | 72
Real Estate Portfolio Segment [Member] | Residential Construction [Member] |  |  |
Impaired balance with an allowance |  |  |
Average recorded investment with an allowance |  |  |
Interest income recognized with an allowance |  |  |
Interest income collected with an allowance |  |  |
Unpaid contractual principal balance | 199 |  |
Impaired balance | 199 |  |
Related allowance |  |  |
Average recorded investment | 66 |  |
Interest income recognized | 5 |  |
Interest income collected | 5 |  |
Unpaid contractual principal balance with no related allowance | 199 |  |
Impaired balance with no related allowance | 199 |  |
Average recorded investment with no related allowance | 66 |  |
Interest income recognized with no related allowance | 5 |  |
Interest income collected with no related allowance | 5 |  |
Unpaid contractual principal balance with an allowance |  |  |
Real Estate Portfolio Segment [Member] | Residential [Member] |  |  |
Impaired balance with an allowance | 41 | 856 | 1,468
Average recorded investment with an allowance | 755 | 965 | 1,043
Interest income recognized with an allowance | (2) | 3 | 28
Interest income collected with an allowance | 2 | 3 | 32
Unpaid contractual principal balance | 5,716 | 6,091 | 5,737
Impaired balance | 4,912 | 5,812 | 5,420
Related allowance | 20 | 440 | 363
Average recorded investment | 5,266 | 5,571 | 5,596
Interest income recognized | 96 | (4) | 101
Interest income collected | 117 | 122 | 223
Unpaid contractual principal balance with no related allowance | 5,667 | 5,227 | 4,261
Impaired balance with no related allowance | 4,871 | 4,956 | 3,952
Average recorded investment with no related allowance | 4,511 | 4,606 | 4,553
Interest income recognized with no related allowance | 98 | (7) | 73
Interest income collected with no related allowance | 115 | 119 | 191
Unpaid contractual principal balance with an allowance | 49 | 864 | 1,476
Real Estate Portfolio Segment [Member] | Farmland [Member] |  |  |
Impaired balance with an allowance | 376 | 384 | 380
Average recorded investment with an allowance | 378 | 386 | 384
Interest income recognized with an allowance | 11 | 10 | 21
Interest income collected with an allowance | 11 | 11 | 21
Unpaid contractual principal balance | 1,055 | 1,319 | 1,301
Impaired balance | 1,054 | 1,317 | 1,179
Related allowance | 26 | 33 | 29
Average recorded investment | 1,137 | 1,507 | 1,400
Interest income recognized | 67 | 7 | 43
Interest income collected | 67 | 12 | 47
Unpaid contractual principal balance with no related allowance | 679 | 935 | 921
Impaired balance with no related allowance | 678 | 933 | 799
Average recorded investment with no related allowance | 759 | 1,121 | 1,016
Interest income recognized with no related allowance | 56 | (3) | 22
Interest income collected with no related allowance | 56 | 1 | 26
Unpaid contractual principal balance with an allowance | 376 | 384 | 380
Consumer and Other Portfolio Segment [Member] | Consumer [Member] |  |  |
Impaired balance with an allowance | 0 | 0 | 0
Average recorded investment with an allowance | 0 | 0 | 0
Interest income recognized with an allowance | 0 | 0 | 0
Interest income collected with an allowance | 0 | 0 | 0
Unpaid contractual principal balance | 149 | 248 | 212
Impaired balance | 149 | 240 | 212
Related allowance | 0 | 0 | 0
Average recorded investment | 188 | 205 | 213
Interest income recognized | 3 | 4 | 10
Interest income collected | 3 | 6 | 12
Unpaid contractual principal balance with no related allowance | 149 | 248 | 212
Impaired balance with no related allowance | 149 | 240 | 212
Average recorded investment with no related allowance | 188 | 205 | 213
Interest income recognized with no related allowance | 3 | 4 | 10
Interest income collected with no related allowance | 3 | 6 | 12
Unpaid contractual principal balance with an allowance | 0 | 0 | $ 0
Consumer and Other Portfolio Segment [Member] | Other [Member] |  |  |
Impaired balance with an allowance |  |  |
Average recorded investment with an allowance |  |  |
Interest income recognized with an allowance |  |  |
Interest income collected with an allowance |  |  |
Unpaid contractual principal balance |  |  |
Impaired balance |  |  |
Related allowance |  |  |
Average recorded investment |  |  |
Interest income recognized |  |  |
Interest income collected |  |  |
Unpaid contractual principal balance with no related allowance |  |  |
Impaired balance with no related allowance |  |  |
Average recorded investment with no related allowance |  |  |
Interest income recognized with no related allowance |  |  |
Interest income collected with no related allowance |  |  |
Unpaid contractual principal balance with an allowance |  |  |

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