Loans and allowance for loan losses (Details 4) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
$ 11,334
|
$ 10,168
|
$ 10,279
|
$ 10,638
|
| Interest Income Recognized |
140
|
79
|
354
|
342
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
3,923
|
8,442
|
5,016
|
9,084
|
| Interest Income Recognized |
31
|
54
|
114
|
198
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
15,257
|
18,610
|
15,295
|
19,722
|
| Interest Income Recognized |
171
|
133
|
468
|
540
|
| Construction and Land Development Commercial [Member] |
|
|
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
99
|
92
|
100
|
211
|
| Interest Income Recognized |
1
|
0
|
3
|
40
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
566
|
1,515
|
572
|
1,742
|
| Interest Income Recognized |
6
|
7
|
20
|
59
|
| Commercial [Member] |
|
|
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
99
|
92
|
100
|
211
|
| Interest Income Recognized |
1
|
0
|
3
|
40
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
467
|
1,423
|
472
|
1,531
|
| Interest Income Recognized |
5
|
7
|
17
|
19
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
566
|
1,515
|
572
|
1,742
|
| Interest Income Recognized |
6
|
7
|
20
|
59
|
| Commercial Real Estate [Member] |
|
|
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
5,718
|
3,481
|
4,745
|
3,470
|
| Interest Income Recognized |
55
|
28
|
172
|
121
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
1,929
|
5,069
|
2,978
|
5,446
|
| Interest Income Recognized |
17
|
47
|
58
|
166
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
7,647
|
8,550
|
7,723
|
8,916
|
| Interest Income Recognized |
72
|
75
|
230
|
287
|
| Owner Occupied [Member] |
|
|
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
3,531
|
935
|
2,539
|
933
|
| Interest Income Recognized |
32
|
0
|
90
|
29
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
1,929
|
4,911
|
2,978
|
5,272
|
| Interest Income Recognized |
17
|
47
|
58
|
157
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
5,460
|
5,846
|
5,517
|
6,205
|
| Interest Income Recognized |
49
|
47
|
148
|
186
|
| Non-Owner Occupied [Member] |
|
|
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
2,187
|
2,546
|
2,206
|
2,537
|
| Interest Income Recognized |
23
|
28
|
82
|
92
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
2,187
|
158
|
2,206
|
174
|
| Interest Income Recognized |
23
|
0
|
82
|
9
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
|
2,704
|
|
2,711
|
| Interest Income Recognized |
|
28
|
|
101
|
| Home equity lines [Member] |
|
|
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
751
|
1,164
|
761
|
1,246
|
| Interest Income Recognized |
16
|
0
|
17
|
1
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
890
|
|
830
|
|
| Interest Income Recognized |
16
|
|
23
|
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
139
|
1,164
|
69
|
1,246
|
| Interest Income Recognized |
0
|
0
|
6
|
1
|
| First Deed of Trust [Member] |
|
|
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
3,737
|
4,137
|
3,615
|
4,188
|
| Interest Income Recognized |
24
|
42
|
86
|
134
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
815
|
1,680
|
1,120
|
1,800
|
| Interest Income Recognized |
8
|
0
|
26
|
9
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
4,552
|
5,817
|
4,735
|
5,987
|
| Interest Income Recognized |
32
|
42
|
112
|
143
|
| Second Deed of Trust [Member] |
|
|
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
555
|
839
|
563
|
950
|
| Interest Income Recognized |
9
|
9
|
27
|
32
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
129
|
171
|
131
|
185
|
| Interest Income Recognized |
1
|
0
|
3
|
4
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
684
|
1,010
|
694
|
1,135
|
| Interest Income Recognized |
10
|
9
|
30
|
36
|
| Consumer Real Estate [Member] |
|
|
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
5,043
|
6,140
|
4,939
|
6,384
|
| Interest Income Recognized |
49
|
51
|
130
|
167
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
1,083
|
1,851
|
1,320
|
1,985
|
| Interest Income Recognized |
9
|
0
|
35
|
13
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
6,126
|
7,991
|
6,259
|
8,368
|
| Interest Income Recognized |
58
|
51
|
165
|
180
|
| Commercial and industrial loans (except those secured by real estate) [Member] |
|
|
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
470
|
455
|
493
|
568
|
| Interest Income Recognized |
35
|
0
|
49
|
14
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
444
|
99
|
245
|
122
|
| Interest Income Recognized |
0
|
0
|
4
|
0
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
915
|
554
|
738
|
690
|
| Interest Income Recognized |
35
|
0
|
53
|
14
|
| Consumer And Other [Member] |
|
|
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
4
|
0
|
2
|
5
|
| Interest Income Recognized |
0
|
0
|
0
|
0
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
|
|
| Average Recorded Investment |
0
|
|
1
|
|
| Interest Income Recognized |
0
|
|
0
|
|
| Total [Abstract] |
|
|
|
|
| Average Recorded Investment |
4
|
0
|
3
|
5
|
| Interest Income Recognized |
$ 0
|
$ 0
|
$ 0
|
$ 0
|