Note 5 - Allowance For Loan Losses and Credit Quality of Loans - Credit Risk by Internally Assigned Grade (Details) - USD ($)
$ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Total loans, gross |
$ 652,337
|
$ 617,308
|
| Performing Financial Instruments [Member] |
|
|
| Total loans, gross |
633,510
|
589,761
|
| Nonperforming Financial Instruments [Member] |
|
|
| Total loans, gross |
18,827
|
27,547
|
| Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
21,518
|
19,243
|
| Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] | Performing Financial Instruments [Member] |
|
|
| Total loans, gross |
20,834
|
18,362
|
| Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |
|
|
| Total loans, gross |
684
|
881
|
| Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
96,761
|
84,438
|
| Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member] |
|
|
| Total loans, gross |
96,240
|
83,372
|
| Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |
|
|
| Total loans, gross |
521
|
1,066
|
| Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
252,169
|
243,220
|
| Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] |
|
|
| Total loans, gross |
244,816
|
228,624
|
| Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |
|
|
| Total loans, gross |
7,353
|
14,596
|
| Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
19,454
|
15,919
|
| Construction Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] |
|
|
| Total loans, gross |
17,734
|
14,104
|
| Construction Real Estate Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |
|
|
| Total loans, gross |
1,720
|
1,815
|
| Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
216,436
|
213,989
|
| Residential Portfolio Segment [Member] | Performing Financial Instruments [Member] |
|
|
| Total loans, gross |
208,458
|
205,430
|
| Residential Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |
|
|
| Total loans, gross |
7,978
|
8,559
|
| Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
45,999
|
40,499
|
| Consumer and Other Portfolio Segment [Member] | Performing Financial Instruments [Member] |
|
|
| Total loans, gross |
45,428
|
39,869
|
| Consumer and Other Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |
|
|
| Total loans, gross |
571
|
630
|
| Not Rated [Member] |
|
|
| Total loans, gross |
183,202
|
177,884
|
| Not Rated [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
2
|
102
|
| Not Rated [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
1,768
|
2,173
|
| Not Rated [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
214
|
310
|
| Not Rated [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
9,960
|
6,789
|
| Not Rated [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
132,144
|
136,049
|
| Not Rated [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
39,114
|
32,461
|
| Risk Grade Rating 1 [Member] |
|
|
| Total loans, gross |
5,787
|
2,777
|
| Risk Grade Rating 1 [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 1 [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
5,787
|
2,717
|
| Risk Grade Rating 1 [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 1 [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 1 [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
60
|
| Risk Grade Rating 1 [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Rating Grade 2 [Member] |
|
|
| Total loans, gross |
1,233
|
1,564
|
| Risk Rating Grade 2 [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
293
|
306
|
| Risk Rating Grade 2 [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
348
|
359
|
| Risk Rating Grade 2 [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
447
|
533
|
| Risk Rating Grade 2 [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Rating Grade 2 [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Rating Grade 2 [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
145
|
366
|
| Risk Grade Rating 3 [Member] |
|
|
| Total loans, gross |
26,364
|
25,449
|
| Risk Grade Rating 3 [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
645
|
432
|
| Risk Grade Rating 3 [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
17,373
|
17,024
|
| Risk Grade Rating 3 [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
8,128
|
7,620
|
| Risk Grade Rating 3 [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 3 [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
218
|
373
|
| Risk Grade Rating 3 [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 4 [Member] |
|
|
| Total loans, gross |
359,042
|
330,469
|
| Risk Grade Rating 4 [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
15,827
|
14,413
|
| Risk Grade Rating 4 [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
63,687
|
55,204
|
| Risk Grade Rating 4 [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
198,416
|
184,504
|
| Risk Grade Rating 4 [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
4,211
|
6,548
|
| Risk Grade Rating 4 [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
70,275
|
62,347
|
| Risk Grade Rating 4 [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
6,626
|
7,453
|
| Risk Grade Rating 4.5 [Member] |
|
|
| Total loans, gross |
27,363
|
11,471
|
| Risk Grade Rating 4.5 [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
1,507
|
840
|
| Risk Grade Rating 4.5 [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
2,142
|
1,094
|
| Risk Grade Rating 4.5 [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
16,227
|
6,506
|
| Risk Grade Rating 4.5 [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
2,974
|
74
|
| Risk Grade Rating 4.5 [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
4,513
|
2,957
|
| Risk Grade Rating 4.5 [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 5 [Member] |
|
|
| Total loans, gross |
26,540
|
34,575
|
| Risk Grade Rating 5 [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
1,769
|
1,340
|
| Risk Grade Rating 5 [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
4,090
|
3,428
|
| Risk Grade Rating 5 [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
16,828
|
23,678
|
| Risk Grade Rating 5 [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
448
|
2,163
|
| Risk Grade Rating 5 [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
3,393
|
3,948
|
| Risk Grade Rating 5 [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
12
|
18
|
| Risk Grade Rating 5.5 [Member] |
|
|
| Total loans, gross |
7,834
|
4,629
|
| Risk Grade Rating 5.5 [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
263
|
929
|
| Risk Grade Rating 5.5 [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
927
|
|
| Risk Grade Rating 5.5 [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
4,081
|
3,700
|
| Risk Grade Rating 5.5 [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
1,574
|
|
| Risk Grade Rating 5.5 [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
989
|
|
| Risk Grade Rating 5.5 [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 6 [Member] |
|
|
| Total loans, gross |
14,972
|
28,490
|
| Risk Grade Rating 6 [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
1,212
|
881
|
| Risk Grade Rating 6 [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
639
|
2,439
|
| Risk Grade Rating 6 [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
7,828
|
16,369
|
| Risk Grade Rating 6 [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
287
|
345
|
| Risk Grade Rating 6 [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
4,904
|
8,255
|
| Risk Grade Rating 6 [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
102
|
201
|
| Risk Grade Rating 7 [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 7 [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 7 [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 7 [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 7 [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 7 [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 7 [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 8 [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 8 [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 8 [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 8 [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 8 [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 8 [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 8 [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 9 [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 9 [Member] | Agriculture and Agricultural Real Estate Loans Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 9 [Member] | Commercial Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 9 [Member] | Commercial Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 9 [Member] | Construction Real Estate Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 9 [Member] | Residential Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|
| Risk Grade Rating 9 [Member] | Consumer and Other Portfolio Segment [Member] |
|
|
| Total loans, gross |
|
|