Allowance for loan losses (Details 2) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Dec. 31, 2012 |
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
$ 3,562
|
$ 5,729
|
$ 7,239
|
$ 10,808
|
Allowance Individually Evaluated for Impairment |
851
|
1,512
|
1,830
|
|
Allowance Collectively Evaluated for Impairment |
2,711
|
4,217
|
5,409
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
306,771
|
286,146
|
286,563
|
|
Loans Individually Evaluated for Impairment |
20,509
|
32,280
|
51,483
|
|
Loans Collectively Evaluated for Impairment |
286,262
|
253,866
|
235,080
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Residential [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
30
|
34
|
135
|
495
|
Allowance Individually Evaluated for Impairment |
0
|
0
|
0
|
|
Allowance Collectively Evaluated for Impairment |
30
|
34
|
135
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
5,202
|
4,315
|
2,931
|
|
Loans Individually Evaluated for Impairment |
0
|
164
|
216
|
|
Loans Collectively Evaluated for Impairment |
5,202
|
4,151
|
2,715
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Commercial [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
291
|
202
|
1,274
|
4,611
|
Allowance Individually Evaluated for Impairment |
2
|
26
|
227
|
|
Allowance Collectively Evaluated for Impairment |
289
|
176
|
1,047
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
25,948
|
25,152
|
28,179
|
|
Loans Individually Evaluated for Impairment |
1,822
|
3,968
|
5,205
|
|
Loans Collectively Evaluated for Impairment |
24,126
|
21,184
|
22,974
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Commercial Real Estate [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
1,695
|
2,651
|
2,226
|
2,199
|
Allowance Individually Evaluated for Impairment |
409
|
905
|
1,044
|
|
Allowance Collectively Evaluated for Impairment |
1,286
|
1,746
|
1,182
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
116,218
|
109,568
|
130,475
|
|
Loans Individually Evaluated for Impairment |
9,652
|
17,247
|
27,269
|
|
Loans Collectively Evaluated for Impairment |
106,566
|
92,321
|
103,206
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Home equity lines [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
448
|
469
|
424
|
$ 658
|
Allowance Individually Evaluated for Impairment |
0
|
0
|
0
|
|
Allowance Collectively Evaluated for Impairment |
448
|
469
|
424
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
20,333
|
20,082
|
21,246
|
|
Loans Individually Evaluated for Impairment |
1,238
|
800
|
1,630
|
|
Loans Collectively Evaluated for Impairment |
19,095
|
19,282
|
19,616
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Construction and Land Development [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
321
|
236
|
1,409
|
|
Allowance Individually Evaluated for Impairment |
2
|
26
|
227
|
|
Allowance Collectively Evaluated for Impairment |
319
|
210
|
1,182
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
31,150
|
29,467
|
31,110
|
|
Loans Individually Evaluated for Impairment |
1,822
|
4,132
|
5,421
|
|
Loans Collectively Evaluated for Impairment |
29,328
|
25,335
|
25,689
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Owner Occupied [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
1,167
|
1,837
|
1,200
|
|
Allowance Individually Evaluated for Impairment |
383
|
905
|
673
|
|
Allowance Collectively Evaluated for Impairment |
784
|
932
|
527
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
69,256
|
58,804
|
73,584
|
|
Loans Individually Evaluated for Impairment |
6,785
|
8,311
|
11,713
|
|
Loans Collectively Evaluated for Impairment |
62,471
|
50,493
|
61,871
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Non-Owner Occupied [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
460
|
607
|
670
|
|
Allowance Individually Evaluated for Impairment |
26
|
0
|
371
|
|
Allowance Collectively Evaluated for Impairment |
434
|
607
|
299
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
38,037
|
38,892
|
43,868
|
|
Loans Individually Evaluated for Impairment |
2,867
|
6,593
|
13,066
|
|
Loans Collectively Evaluated for Impairment |
35,170
|
32,299
|
30,802
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Multifamily [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
51
|
77
|
19
|
|
Allowance Individually Evaluated for Impairment |
0
|
0
|
0
|
|
Allowance Collectively Evaluated for Impairment |
51
|
77
|
19
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
8,537
|
11,438
|
11,560
|
|
Loans Individually Evaluated for Impairment |
0
|
2,322
|
2,373
|
|
Loans Collectively Evaluated for Impairment |
8,537
|
9,116
|
9,187
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Farmland [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
17
|
130
|
337
|
|
Allowance Individually Evaluated for Impairment |
0
|
0
|
0
|
|
Allowance Collectively Evaluated for Impairment |
17
|
130
|
337
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
388
|
434
|
1,463
|
|
Loans Individually Evaluated for Impairment |
0
|
21
|
117
|
|
Loans Collectively Evaluated for Impairment |
388
|
413
|
1,346
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
First Deed of Trust [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
602
|
1,345
|
1,992
|
|
Allowance Individually Evaluated for Impairment |
324
|
200
|
484
|
|
Allowance Collectively Evaluated for Impairment |
278
|
1,145
|
1,508
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
56,776
|
61,837
|
66,873
|
|
Loans Individually Evaluated for Impairment |
5,759
|
7,900
|
10,361
|
|
Loans Collectively Evaluated for Impairment |
51,017
|
53,937
|
56,512
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Second Deed of Trust [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
111
|
275
|
394
|
|
Allowance Individually Evaluated for Impairment |
98
|
142
|
32
|
|
Allowance Collectively Evaluated for Impairment |
13
|
133
|
362
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
6,485
|
7,854
|
8,675
|
|
Loans Individually Evaluated for Impairment |
1,212
|
1,360
|
1,257
|
|
Loans Collectively Evaluated for Impairment |
5,273
|
6,494
|
7,418
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Consumer Real Estate [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
1,161
|
2,089
|
2,810
|
|
Allowance Individually Evaluated for Impairment |
422
|
342
|
516
|
|
Allowance Collectively Evaluated for Impairment |
739
|
1,747
|
2,294
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
83,594
|
89,773
|
96,794
|
|
Loans Individually Evaluated for Impairment |
8,209
|
10,060
|
13,248
|
|
Loans Collectively Evaluated for Impairment |
75,385
|
79,713
|
83,546
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Commercial and industrial loans (except those secured by real estate) [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
94
|
506
|
724
|
|
Allowance Individually Evaluated for Impairment |
18
|
239
|
43
|
|
Allowance Collectively Evaluated for Impairment |
76
|
267
|
681
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
20,086
|
22,165
|
26,254
|
|
Loans Individually Evaluated for Impairment |
826
|
818
|
5,513
|
|
Loans Collectively Evaluated for Impairment |
19,260
|
21,347
|
20,741
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Guaranteed student loans [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
230
|
217
|
|
|
Allowance Individually Evaluated for Impairment |
0
|
0
|
|
|
Allowance Collectively Evaluated for Impairment |
230
|
217
|
|
|
Loans Ending Balance |
53,989
|
33,562
|
|
|
Loans Individually Evaluated for Impairment |
0
|
0
|
|
|
Loans Collectively Evaluated for Impairment |
53,989
|
33,562
|
|
|
Loans Acquired with Deteriorated Credit Quality |
0
|
0
|
|
|
Consumer And Other [Member] |
|
|
|
|
Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
|
|
Allowance Ending Balance |
61
|
30
|
70
|
|
Allowance Individually Evaluated for Impairment |
0
|
0
|
0
|
|
Allowance Collectively Evaluated for Impairment |
61
|
30
|
70
|
|
Allowance Loans acquired with Deteriorated Credit Quality |
0
|
0
|
0
|
|
Loans Ending Balance |
1,734
|
1,611
|
1,930
|
|
Loans Individually Evaluated for Impairment |
0
|
23
|
32
|
|
Loans Collectively Evaluated for Impairment |
1,734
|
1,588
|
1,898
|
|
Loans Acquired with Deteriorated Credit Quality |
$ 0
|
$ 0
|
$ 0
|
|