Loans and allowance for loan losses (Details 4) - USD ($)
$ in Thousands |
3 Months Ended |
Mar. 31, 2016 |
Mar. 31, 2015 |
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
$ 10,793
|
$ 21,054
|
| Interest Income Recognized |
125
|
260
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
9,796
|
9,318
|
| Interest Income Recognized |
76
|
76
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
20,589
|
30,372
|
| Interest Income Recognized |
201
|
336
|
| Construction and Land Development [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
98
|
3,199
|
| Interest Income Recognized |
11
|
40
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
1,842
|
3,786
|
| Interest Income Recognized |
17
|
44
|
| Residential [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
0
|
232
|
| Interest Income Recognized |
0
|
1
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
0
|
232
|
| Interest Income Recognized |
0
|
1
|
| Commercial [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
98
|
2,967
|
| Interest Income Recognized |
11
|
39
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
1,743
|
587
|
| Interest Income Recognized |
6
|
4
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
1,842
|
3,554
|
| Interest Income Recognized |
17
|
43
|
| Commercial Real Estate [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
3,447
|
9,225
|
| Interest Income Recognized |
48
|
110
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
5,694
|
6,699
|
| Interest Income Recognized |
62
|
67
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
9,141
|
15,924
|
| Interest Income Recognized |
110
|
177
|
| Owner Occupied [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
816
|
1,680
|
| Interest Income Recognized |
14
|
17
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
5,600
|
6,597
|
| Interest Income Recognized |
57
|
66
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
6,416
|
8,277
|
| Interest Income Recognized |
71
|
83
|
| Non-Owner Occupied [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
2,631
|
6,563
|
| Interest Income Recognized |
34
|
87
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
94
|
102
|
| Interest Income Recognized |
5
|
1
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
2,725
|
6,665
|
| Interest Income Recognized |
39
|
88
|
| Multifamily [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
0
|
968
|
| Interest Income Recognized |
0
|
6
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
0
|
968
|
| Interest Income Recognized |
0
|
6
|
| Farmland [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
0
|
14
|
| Interest Income Recognized |
0
|
0
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
0
|
14
|
| Interest Income Recognized |
0
|
0
|
| Home equity lines [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
1,287
|
800
|
| Interest Income Recognized |
0
|
4
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
30
|
0
|
| Interest Income Recognized |
0
|
0
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
1,317
|
800
|
| Interest Income Recognized |
0
|
4
|
| First Deed of Trust [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
4,092
|
6,401
|
| Interest Income Recognized |
47
|
90
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
2,042
|
1,285
|
| Interest Income Recognized |
6
|
0
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
6,134
|
7,686
|
| Interest Income Recognized |
53
|
90
|
| Second Deed of Trust [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
1,057
|
1,183
|
| Interest Income Recognized |
12
|
14
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
149
|
254
|
| Interest Income Recognized |
2
|
0
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
1,206
|
1,437
|
| Interest Income Recognized |
14
|
14
|
| Consumer Real Estate [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
6,436
|
8,384
|
| Interest Income Recognized |
59
|
108
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
2,221
|
1,539
|
| Interest Income Recognized |
8
|
0
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
8,657
|
9,923
|
| Interest Income Recognized |
67
|
108
|
| Commercial and industrial loans (except those secured by real estate) [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
797
|
227
|
| Interest Income Recognized |
7
|
2
|
| Impaired Loans With Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
138
|
493
|
| Interest Income Recognized |
0
|
5
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
936
|
720
|
| Interest Income Recognized |
7
|
7
|
| Consumer And Other [Member] |
|
|
| Impaired Loans With No Related Allowance Recorded [Abstract] |
|
|
| Average Recorded Investment |
15
|
19
|
| Interest Income Recognized |
0
|
0
|
| Total [Abstract] |
|
|
| Average Recorded Investment |
15
|
19
|
| Interest Income Recognized |
$ 0
|
$ 0
|