Allowance for loan losses (Details Textual) - USD ($)
|
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Loans and Leases Receivable, Allowance |
$ 3,373,000
|
$ 3,562,000
|
$ 5,729,000
|
$ 7,239,000
|
| Allowance for Loan and Lease Loss, Recovery of Bad Debts |
355,000
|
649,000
|
771,000
|
|
| Allowance for Loan and Lease Losses, Write-offs |
544,000
|
816,000
|
2,381,000
|
|
| Provision for Loan and Lease Losses |
0
|
(2,000,000)
|
100,000
|
|
| Unallocated Financing Receivable [Member] |
|
|
|
|
| Loans and Leases Receivable, Allowance |
713,000
|
59,000
|
|
|
| Commercial Real Estate Portfoliio [Member] |
|
|
|
|
| Allowance for Loan and Lease Loss, Recovery of Bad Debts |
730,000
|
866,000
|
|
|
| Allowance for Loan and Lease Losses, Write-offs |
$ 111,000
|
$ 90,000
|
$ 1,220,000
|
|
| Percentage Of Recovery Loss On Portfolio From Historical Experience |
0.20%
|
0.57%
|
0.96%
|
|
| Consumer Real Estate Portfoliio [Member] |
|
|
|
|
| Allowance for Loan and Lease Loss, Recovery of Bad Debts |
|
$ 1,143,000
|
|
|
| Allowance for Loan and Lease Losses, Write-offs |
|
$ 215,000
|
$ 562,000
|
|
| Percentage Of Recovery Loss On Portfolio From Historical Experience |
22.00%
|
0.24%
|
1.36%
|
|
| Construction and Land Development [Member] |
|
|
|
|
| Loans and Leases Receivable, Allowance |
$ 341,000
|
$ 321,000
|
$ 236,000
|
1,409,000
|
| Allowance for Loan and Lease Loss, Recovery of Bad Debts |
11,000
|
51,000
|
46,000
|
|
| Allowance for Loan and Lease Losses, Write-offs |
10,000
|
252,000
|
100,000
|
|
| Increase (Decrease) in Finance Receivables |
|
|
$ 1,643,000
|
$ 12,945,000
|
| Percentage Of Recovery Loss On Portfolio From Historical Experience |
|
|
0.27%
|
|
| Provision for Loan and Lease Losses |
$ 19,000
|
$ 286,000
|
$ (1,119,000)
|
|