Fair value (Details) - USD ($)
$ in Thousands |
Sep. 30, 2017 |
Dec. 31, 2016 |
| Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Impaired loans |
$ 14,039
|
$ 14,467
|
| Real estate owned |
1,788
|
2,926
|
| Reported Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Impaired loans |
1,535
|
974
|
| Assets held for sale |
841
|
841
|
| Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| US Government Agencies |
0
|
2,103
|
| Mortgage-backed securities |
0
|
9,450
|
| Other investments |
1,000
|
|
| Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| US Government Agencies |
31,991
|
30,143
|
| Mortgage-backed securities |
10,518
|
2,198
|
| Other investments |
1,325
|
|
| Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| US Government Agencies |
0
|
0
|
| Mortgage-backed securities |
0
|
0
|
| Other investments |
0
|
|
| Fair Value, Measurements, Recurring [Member] | Reported Value Measurement [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| US Government Agencies |
31,991
|
32,246
|
| Mortgage-backed securities |
10,518
|
11,648
|
| Other investments |
2,325
|
|
| Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Impaired loans |
0
|
0
|
| Assets held for sale |
0
|
0
|
| Real estate owned |
0
|
0
|
| Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Impaired loans |
14,039
|
14,467
|
| Assets held for sale |
0
|
0
|
| Real estate owned |
1,788
|
2,926
|
| Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Impaired loans |
1,535
|
974
|
| Assets held for sale |
841
|
841
|
| Real estate owned |
0
|
0
|
| Fair Value, Measurements, Nonrecurring [Member] | Reported Value Measurement [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Impaired loans |
15,574
|
15,441
|
| Assets held for sale |
841
|
841
|
| Real estate owned |
$ 1,788
|
$ 2,926
|