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Loan and Allowance for Loan Losses (Tables) | 3 Months Ended
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Mar. 31, 2018
Loans And Leases Receivable Disclosure [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  |  |  |  |  |  | March 31, |  |  | December 31,
(In thousands) |  |  | 2018 |  |  | 2017
Commercial and industrial |  | $ | 57,877 |  | $ | 59,086
Construction and land development |  |  | 35,910 |  |  | 39,607
Commercial real estate: |  |  |  |  |  |
| Owner occupied |  |  | 43,467 |  |  | 44,192
| Multi-family |  |  | 40,060 |  |  | 52,167
| Other |  |  | 150,818 |  |  | 142,674
|  | Total commercial real estate |  |  | 234,345 |  |  | 239,033
Residential real estate: |  |  |  |  |  |
| Consumer mortgage |  |  | 59,114 |  |  | 59,540
| Investment property |  |  | 47,382 |  |  | 47,323
|  | Total residential real estate |  |  | 106,496 |  |  | 106,863
Consumer installment |  |  | 9,685 |  |  | 9,588
|  | Total loans |  |  | 444,313 |  |  | 454,177
Less: unearned income |  |  | (509) |  |  | (526)
|  | Loans, net of unearned income |  | $ | 443,804 |  | $ | 453,651
Past Due Financing Receivables [Table Text Block] |
|  |  |  |  |  |  |  |  | Accruing | Accruing | Total |  |  |  |
|  |  |  |  |  |  |  |  | 30-89 Days | Greater than | Accruing | Non- |  |  | Total
(In thousands) |  | Current | Past Due | 90 days | Loans | Accrual |  |  | Loans
March 31, 2018: |  |  |  |  |  |  |  |  |  |
Commercial and industrial |  | $ | 57,640 | 3 | — | 57,643 | 234 |  | $ | 57,877
Construction and land development |  |  | 35,657 | 253 | — | 35,910 | — |  |  | 35,910
Commercial real estate: |  |  |  |  |  |  |  |  |  |
| Owner occupied |  |  | 43,467 | — | — | 43,467 | — |  |  | 43,467
| Multi-family |  |  | 40,060 | — | — | 40,060 | — |  |  | 40,060
| Other |  |  | 148,355 | — | — | 148,355 | 2,463 |  |  | 150,818
|  | Total commercial real estate |  |  | 231,882 | — | — | 231,882 | 2,463 |  |  | 234,345
Residential real estate: |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  |  | 58,142 | 442 | — | 58,584 | 530 |  |  | 59,114
| Investment property |  |  | 47,251 | 131 | — | 47,382 | — |  |  | 47,382
|  | Total residential real estate |  |  | 105,393 | 573 | — | 105,966 | 530 |  |  | 106,496
Consumer installment |  |  | 9,664 | 9 | — | 9,673 | 12 |  |  | 9,685
|  | Total |  | $ | 440,236 | 838 | — | 441,074 | 3,239 |  | $ | 444,313
December 31, 2017: |  |  |  |  |  |  |  |  |  |
Commercial and industrial |  | $ | 59,047 | 8 | — | 59,055 | 31 |  | $ | 59,086
Construction and land development |  |  | 39,607 | — | — | 39,607 | — |  |  | 39,607
Commercial real estate: |  |  |  |  |  |  |  |  |  |
| Owner occupied |  |  | 44,192 | — | — | 44,192 | — |  |  | 44,192
| Multi-family |  |  | 52,167 | — | — | 52,167 | — |  |  | 52,167
| Other |  |  | 140,486 | — | — | 140,486 | 2,188 |  |  | 142,674
|  | Total commercial real estate |  |  | 236,845 | — | — | 236,845 | 2,188 |  |  | 239,033
Residential real estate: |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  |  | 58,195 | 746 | — | 58,941 | 599 |  |  | 59,540
| Investment property |  |  | 46,871 | 312 | — | 47,183 | 140 |  |  | 47,323
|  | Total residential real estate |  |  | 105,066 | 1,058 | — | 106,124 | 739 |  |  | 106,863
Consumer installment |  |  | 9,517 | 57 | — | 9,574 | 14 |  |  | 9,588
|  | Total |  | $ | 450,082 | 1,123 | — | 451,205 | 2,972 |  | $ | 454,177
Allowance for Credit Losses on Financing Receivables [Table Text Block] |
|  |  | March 31, 2018
(In thousands) | Commercial and industrial |  | Construction and land development |  | Commercial real estate |  | Residential real estate |  | Consumer installment |  |  |  | Total
Quarter ended: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 653 |  | 734 |  | 2,126 |  | 1,071 |  | 173 |  |  | $ | 4,757
Charge-offs |  | (52) |  | — |  | — |  | (4) |  | (2) |  |  |  | (58)
Recoveries |  | 14 |  | — |  | — |  | 16 |  | 3 |  |  |  | 33
| Net (charge-offs) recoveries |  | (38) |  | — |  | — |  | 12 |  | 1 |  |  |  | (25)
Provision for loan losses |  | 109 |  | (64) |  | (7) |  | (30) |  | (8) |  |  |  | —
Ending balance | $ | 724 |  | 670 |  | 2,119 |  | 1,053 |  | 166 |  |  | $ | 4,732
|  |  | March 31, 2017
(In thousands) | Commercial and industrial |  | Construction and land development |  | Commercial real estate |  | Residential real estate |  | Consumer installment |  |  |  | Total
Quarter ended: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 540 |  | 812 |  | 2,071 |  | 1,107 |  | 113 |  |  | $ | 4,643
Charge-offs |  | — |  | — |  | — |  | (78) |  | (1) |  |  |  | (79)
Recoveries |  | 2 |  | 5 |  | — |  | 14 |  | 3 |  |  |  | 24
| Net recoveries (charge-offs) |  | 2 |  | 5 |  | — |  | (64) |  | 2 |  |  |  | (55)
Provision for loan losses |  | (18) |  | 28 |  | (67) |  | 21 |  | 36 |  |  |  | —
Ending balance | $ | 524 |  | 845 |  | 2,004 |  | 1,064 |  | 151 |  |  | $ | 4,588
Financing Receivable Allowance for Credit Loss Additional Information [Table Text Block] |
|  |  |  |  |  |  | Collectively evaluated (1) |  | Individually evaluated (2) |  | Total
|  |  |  |  |  |  | Allowance | Recorded |  | Allowance | Recorded |  | Allowance | Recorded
|  |  |  |  |  |  | for loan | investment |  | for loan | investment |  | for loan | investment
(In thousands) |  | losses | in loans |  | losses | in loans |  | losses | in loans
March 31, 2018: |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 694 | 57,847 |  | 30 | 30 |  | 724 | 57,877
Construction and land development |  | 670 | 35,910 |  | — | — |  | 670 | 35,910
Commercial real estate |  | 2,113 | 232,014 |  | 6 | 2,331 |  | 2,119 | 234,345
Residential real estate |  | 1,053 | 106,496 |  | — | — |  | 1,053 | 106,496
Consumer installment |  | 166 | 9,685 |  | — | — |  | 166 | 9,685
|  | Total | $ | 4,696 | 441,952 |  | 36 | 2,361 |  | 4,732 | 444,313
March 31, 2017: |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 524 | 50,222 |  | — | 6 |  | 524 | 50,228
Construction and land development |  | 845 | 45,076 |  | — | 22 |  | 845 | 45,098
Commercial real estate |  | 1,977 | 216,701 |  | 27 | 2,038 |  | 2,004 | 218,739
Residential real estate |  | 1,064 | 108,096 |  | — | — |  | 1,064 | 108,096
Consumer installment |  | 151 | 9,032 |  | — | — |  | 151 | 9,032
|  | Total | $ | 4,561 | 429,127 |  | 27 | 2,066 |  | 4,588 | 431,193
(1) | Represents loans collectively evaluated for impairment in accordance with ASC 450-20, Loss Contingencies (formerly FAS 5), and
| pursuant to amendments by ASU 2010-20 regarding allowance for non-impaired loans.
(2) | Represents loans individually evaluated for impairment in accordance with ASC 310-30, Receivables (formerly FAS 114), and
| pursuant to amendments by ASU 2010-20 regarding allowance for impaired loans.
Financing Receivable Credit Quality Indicators [Table Text Block] |
(In thousands) |  | Pass |  | Special Mention |  | Substandard Accruing |  | Nonaccrual |  |  | Total loans
March 31, 2018: |  |  |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 57,169 |  | 362 |  | 112 |  | 234 |  | $ | 57,877
Construction and land development |  | 35,371 |  | 89 |  | 450 |  | — |  |  | 35,910
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |
| Owner occupied |  | 42,970 |  | 161 |  | 336 |  | — |  |  | 43,467
| Multi-family |  | 40,060 |  | — |  | — |  | — |  |  | 40,060
| Other |  | 147,598 |  | 368 |  | 389 |  | 2,463 |  |  | 150,818
|  | Total commercial real estate |  | 230,628 |  | 529 |  | 725 |  | 2,463 |  |  | 234,345
Residential real estate: |  |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  | 53,454 |  | 1,786 |  | 3,344 |  | 530 |  |  | 59,114
| Investment property |  | 46,682 |  | 52 |  | 648 |  | — |  |  | 47,382
|  | Total residential real estate |  | 100,136 |  | 1,838 |  | 3,992 |  | 530 |  |  | 106,496
Consumer installment |  | 9,531 |  | 72 |  | 70 |  | 12 |  |  | 9,685
|  | Total | $ | 432,835 |  | 2,890 |  | 5,349 |  | 3,239 |  | $ | 444,313
December 31, 2017: |  |  |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 58,842 |  | 94 |  | 119 |  | 31 |  | $ | 59,086
Construction and land development |  | 39,049 |  | 90 |  | 468 |  | — |  |  | 39,607
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |
| Owner occupied |  | 43,615 |  | 240 |  | 337 |  | — |  |  | 44,192
| Multi-family |  | 52,167 |  | — |  | — |  | — |  |  | 52,167
| Other |  | 139,695 |  | 395 |  | 396 |  | 2,188 |  |  | 142,674
|  | Total commercial real estate |  | 235,477 |  | 635 |  | 733 |  | 2,188 |  |  | 239,033
Residential real estate: |  |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  | 54,101 |  | 1,254 |  | 3,586 |  | 599 |  |  | 59,540
| Investment property |  | 46,463 |  | 53 |  | 667 |  | 140 |  |  | 47,323
|  | Total residential real estate |  | 100,564 |  | 1,307 |  | 4,253 |  | 739 |  |  | 106,863
Consumer installment |  | 9,430 |  | 66 |  | 78 |  | 14 |  |  | 9,588
|  | Total | $ | 443,362 |  | 2,192 |  | 5,651 |  | 2,972 |  | $ | 454,177
Impaired Financing Receivables [Table Text Block] |
|  |  |  |  |  |  | March 31, 2018
(In thousands) |  | Unpaid principal balance (1) | Charge-offs and payments applied (2) | Recorded investment (3) |  |  | Related allowance
With no allowance recorded:
Commercial real estate: |  |  |  |  |  |  |
| Other | $ | 3,296 | (1,135) | 2,161 |  |  |
|  | Total commercial real estate |  | 3,296 | (1,135) | 2,161 |  |  |
|  | Total | $ | 3,296 | (1,135) | 2,161 |
With allowance recorded: |
Commercial and industrial | $ | 51 | (21) | 30 |  | $ | 30
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied |  | 170 | — | 170 |  |  | 6
|  | Total commercial real estate |  | 170 | — | 170 |  |  | 6
|  | Total |  | 221 | (21) | 200 |  |  | 36
|  | Total impaired loans | $ | 3,517 | (1,156) | 2,361 |  | $ | 36
(1) Unpaid principal balance represents the contractual obligation due from the customer.
(2) Charge-offs and payments applied represents cumulative charge-offs taken, as well as interest payments that have been
| applied against the outstanding principal balance subsequent to the loans being placed on nonaccrual status.
(3) Recorded investment represents the unpaid principal balance less charge-offs and payments applied; it is shown before
| any related allowance for loan losses.
|  |  |  |  |  |  | December 31, 2017
(In thousands) |  | Unpaid principal balance (1) | Charge-offs and payments applied (2) | Recorded investment (3) |  |  | Related allowance
With no allowance recorded:
Commercial real estate: |  |  |  |  |  |  |
| Other |  | 3,630 | (1,094) | 2,536 |  |  |
|  | Total commercial real estate |  | 3,630 | (1,094) | 2,536 |  |  |
|  | Total | $ | 3,630 | (1,094) | 2,536 |
With allowance recorded: |
Commercial and industrial |  | 52 | (21) | 31 |  |  | 31
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied | $ | 175 | — | 175 |  | $ | 11
|  | Total commercial real estate |  | 175 | — | 175 |  |  | 11
|  | Total |  | 227 | (21) | 206 |  |  | 42
|  | Total impaired loans | $ | 3,857 | (1,115) | 2,742 |  | $ | 42
(1) Unpaid principal balance represents the contractual obligation due from the customer.
(2) Charge-offs and payments applied represents cumulative charge-offs taken, as well as interest payments that have been
| applied against the outstanding principal balance subsequent to the loans being placed on nonaccrual status.
(3) Recorded investment represents the unpaid principal balance less charge-offs and payments applied; it is shown before
| any related allowance for loan losses.
Schedule Of Average Impaired Financing Receivable [Table Text Block] |
|  |  |  |  |  |  | Quarter ended March 31, 2018 |  |  | Quarter ended March 31, 2017
|  |  |  |  |  |  |  | Average |  | Total interest |  |  |  | Average |  | Total interest
|  |  |  |  |  |  |  | recorded |  | income |  |  |  | recorded |  | income
(In thousands) |  |  | investment |  | recognized |  |  |  | investment |  | recognized
Impaired loans: |  |  |  |  |  |  |
Commercial and industrial |  | $ | 30 |  | $ | — |  |  | $ | 10 |  | $ | —
Construction and land development |  |  | — |  |  | — |  |  |  | 28 |  |  | —
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |  |  |
| Owner occupied |  |  | 172 |  |  | 3 |  |  |  | 191 |  |  | 3
| Other |  |  | 2,347 |  |  | — |  |  |  | 1,870 |  |  | —
|  | Total commercial real estate |  |  | 2,519 |  |  | 3 |  |  |  | 2,061 |  |  | 3
|  | Total |  | $ | 2,549 |  | $ | 3 |  |  | $ | 2,099 |  | $ | 3
Troubled Debt Restructurings on Financing Receivables, Accrual Status [Table Text Block] |
|  |  |  |  |  |  | TDRs
|  |  |  |  |  |  |  |  |  |  |  | Related
(In thousands) |  | Accruing | Nonaccrual | Total |  |  | Allowance
March 31, 2018 |  |  |  |  |  |  |
Commercial and industrial | $ | — | 30 | 30 |  | $ | 30
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied |  | 170 | — | 170 |  |  | 6
| Other |  | — | 2,161 | 2,161 |  |  | —
|  | Total commercial real estate |  | 170 | 2,161 | 2,331 |  |  | 6
|  | Total | $ | 170 | 2,191 | 2,361 |  | $ | 36
December 31, 2017 |  |
Commercial and industrial | $ | — | 31 | 31 |  | $ | 31
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied |  | 175 | — | 175 |  |  | 11
| Other |  | 287 | 1,431 | 1,718 |  |  | —
|  | Total commercial real estate |  | 462 | 1,431 | 1,893 |  |  | 11
|  | Total | $ | 462 | 1,462 | 1,924 |  | $ | 42
Troubled Debt Restructuring Modifications [Table Text Block] |
|  |  |  |  |  | Quarter ended March 31, 2018
|  |  |  |  |  |  |  |  | Pre- |  | Post -
|  |  |  |  |  |  |  |  | modification |  | modification
|  |  |  |  |  | Number |  |  | outstanding |  | outstanding
|  |  |  |  |  | of |  |  | recorded |  | recorded
(Dollars in thousands) | contracts |  |  | investment |  | investment
TDRs: |  |  |  |  |
Commercial real estate: |  |  |  |  |  |
| Other | 1 |  | $ | 737 |  | 737
|  | Total commercial real estate | 1 |  |  | 737 |  | 737
|  | Total | 1 |  | $ | 737 |  | 737
Schedule Of Debtor Troubled Debt Restructuring, Subsequent Defaults [Table Text Block] |
|  |  |  |  |  | Quarter ended March 31, 2018
|  |  |  |  |  | Number of |  |  | Recorded |
(Dollars in thousands) | Contracts |  |  | investment(1) |
TDRs: |  |  |  |  |
Commercial real estate: |  |  |  |  |
| Other | 1 |  | $ | 1,259 |
|  | Total commercial real estate | 1 |  |  | 1,259 |
Residential real estate: |  |  |  |  |
|  | Total | 1 |  | $ | 1,259 |
(1) Amount as of applicable month end during the respective period for which there was a payment default.

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