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Loan and Allowance for Loan Losses (Tables) | 6 Months Ended
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Jun. 30, 2017
Loans And Leases Receivable Disclosure [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  |  |  |  |  |  | June 30, |  |  | December 31,
(In thousands) |  |  | 2017 |  |  | 2016
Commercial and industrial |  | $ | 50,974 |  | $ | 49,850
Construction and land development |  |  | 46,386 |  |  | 41,650
Commercial real estate: |  |  |  |  |  |
| Owner occupied |  |  | 38,940 |  |  | 49,745
| Multi-family |  |  | 47,206 |  |  | 46,998
| Other |  |  | 134,717 |  |  | 123,696
|  | Total commercial real estate |  |  | 220,863 |  |  | 220,439
Residential real estate: |  |  |  |  |  |
| Consumer mortgage |  |  | 64,362 |  |  | 65,564
| Investment property |  |  | 45,926 |  |  | 45,291
|  | Total residential real estate |  |  | 110,288 |  |  | 110,855
Consumer installment |  |  | 9,409 |  |  | 8,712
|  | Total loans |  |  | 437,920 |  |  | 431,506
Less: unearned income |  |  | (633) |  |  | (560)
|  | Loans, net of unearned income |  | $ | 437,287 |  | $ | 430,946
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
June 30, 2017: |  |  |  |  |  |  |  |  |  |
Commercial and industrial |  | $ | 50,745 | 195 | — | 50,940 | 34 |  | $ | 50,974
Construction and land development |  |  | 46,384 | 2 | — | 46,386 | — |  |  | 46,386
Commercial real estate: |  |  |  |  |  |  |  |  |  |
| Owner occupied |  |  | 38,940 | — | — | 38,940 | — |  |  | 38,940
| Multi-family |  |  | 47,206 | — | — | 47,206 | — |  |  | 47,206
| Other |  |  | 132,172 | 748 | — | 132,920 | 1,797 |  |  | 134,717
|  | Total commercial real estate |  |  | 218,318 | 748 | — | 219,066 | 1,797 |  |  | 220,863
Residential real estate: |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  |  | 63,550 | 364 | 42 | 63,956 | 406 |  |  | 64,362
| Investment property |  |  | 45,794 | 132 | — | 45,926 | — |  |  | 45,926
|  | Total residential real estate |  |  | 109,344 | 496 | 42 | 109,882 | 406 |  |  | 110,288
Consumer installment |  |  | 9,366 | 25 | — | 9,391 | 18 |  |  | 9,409
|  | Total |  | $ | 434,157 | 1,466 | 42 | 435,665 | 2,255 |  | $ | 437,920
December 31, 2016: |  |  |  |  |  |  |  |  |  |
Commercial and industrial |  | $ | 49,747 | 66 | — | 49,813 | 37 |  | $ | 49,850
Construction and land development |  |  | 41,223 | 395 | — | 41,618 | 32 |  |  | 41,650
Commercial real estate: |  |  |  |  |  |  |  |  |  |
| Owner occupied |  |  | 49,564 | 43 | — | 49,607 | 138 |  |  | 49,745
| Multi-family |  |  | 46,998 | — | — | 46,998 | — |  |  | 46,998
| Other |  |  | 121,608 | 199 | — | 121,807 | 1,889 |  |  | 123,696
|  | Total commercial real estate |  |  | 218,170 | 242 | — | 218,412 | 2,027 |  |  | 220,439
Residential real estate: |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  |  | 64,059 | 1,282 | — | 65,341 | 223 |  |  | 65,564
| Investment property |  |  | 45,243 | 19 | — | 45,262 | 29 |  |  | 45,291
|  | Total residential real estate |  |  | 109,302 | 1,301 | — | 110,603 | 252 |  |  | 110,855
Consumer installment |  |  | 8,652 | 38 | — | 8,690 | 22 |  |  | 8,712
|  | Total |  | $ | 427,094 | 2,042 | — | 429,136 | 2,370 |  | $ | 431,506
Allowance for Credit Losses on Financing Receivables [Table Text Block] |
|  |  | June 30, 2017
(In thousands) | Commercial and industrial |  | Construction and land development |  | Commercial real estate |  | Residential real estate |  | Consumer installment |  |  |  | Total
Quarter ended: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 524 |  | 845 |  | 2,004 |  | 1,064 |  | 151 |  |  | $ | 4,588
Charge-offs |  | — |  | — |  | — |  | — |  | (5) |  |  |  | (5)
Recoveries |  | 4 |  | 209 |  | — |  | 63 |  | 6 |  |  |  | 282
| Net recoveries |  | 4 |  | 209 |  | — |  | 63 |  | 1 |  |  |  | 277
Provision for loan losses |  | 149 |  | (180) |  | 117 |  | (8) |  | 22 |  |  |  | 100
Ending balance | $ | 677 |  | 874 |  | 2,121 |  | 1,119 |  | 174 |  |  | $ | 4,965
Six months ended: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 540 |  | 812 |  | 2,071 |  | 1,107 |  | 113 |  |  | $ | 4,643
Charge-offs |  | — |  | — |  | — |  | (78) |  | (6) |  |  |  | (84)
Recoveries |  | 6 |  | 214 |  | — |  | 77 |  | 9 |  |  |  | 306
| Net recoveries (charge-offs) |  | 6 |  | 214 |  | — |  | (1) |  | 3 |  |  |  | 222
Provision for loan losses |  | 131 |  | (152) |  | 50 |  | 13 |  | 58 |  |  |  | 100
Ending balance | $ | 677 |  | 874 |  | 2,121 |  | 1,119 |  | 174 |  |  | $ | 4,965
|  |  | June 30, 2016
(In thousands) | Commercial and industrial |  | Construction and land development |  | Commercial real estate |  | Residential real estate |  | Consumer installment |  |  |  | Total
Quarter ended: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 517 |  | 695 |  | 2,403 |  | 1,026 |  | 133 |  |  | $ | 4,774
Charge-offs |  | (83) |  | — |  | (194) |  | (37) |  | (2) |  |  |  | (316)
Recoveries |  | 3 |  | 5 |  | — |  | 58 |  | 4 |  |  |  | 70
| Net (charge-offs) recoveries |  | (80) |  | 5 |  | (194) |  | 21 |  | 2 |  |  |  | (246)
Provision for loan losses |  | 69 |  | 44 |  | (117) |  | 14 |  | (10) |  |  |  | —
Ending balance | $ | 506 |  | 744 |  | 2,092 |  | 1,061 |  | 125 |  |  | $ | 4,528
Six months ended: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 523 |  | 669 |  | 1,879 |  | 1,059 |  | 159 |  |  | $ | 4,289
Charge-offs |  | (83) |  | — |  | (194) |  | (155) |  | (28) |  |  |  | (460)
Recoveries |  | 23 |  | 1,203 |  | — |  | 65 |  | 8 |  |  |  | 1,299
| Net (charge-offs) recoveries |  | (60) |  | 1,203 |  | (194) |  | (90) |  | (20) |  |  |  | 839
Provision for loan losses |  | 43 |  | (1,128) |  | 407 |  | 92 |  | (14) |  |  |  | (600)
Ending balance | $ | 506 |  | 744 |  | 2,092 |  | 1,061 |  | 125 |  |  | $ | 4,528
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
June 30, 2017: |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 677 | 50,974 |  | — | — |  | 677 | 50,974
Construction and land development |  | 874 | 46,386 |  | — | — |  | 874 | 46,386
Commercial real estate |  | 2,099 | 218,882 |  | 22 | 1,981 |  | 2,121 | 220,863
Residential real estate |  | 1,119 | 110,288 |  | — | — |  | 1,119 | 110,288
Consumer installment |  | 174 | 9,409 |  | — | — |  | 174 | 9,409
|  | Total | $ | 4,943 | 435,939 |  | 22 | 1,981 |  | 4,965 | 437,920
June 30, 2016: |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 506 | 50,159 |  | — | 31 |  | 506 | 50,190
Construction and land development |  | 744 | 49,291 |  | — | 55 |  | 744 | 49,346
Commercial real estate |  | 1,995 | 206,258 |  | 97 | 2,567 |  | 2,092 | 208,825
Residential real estate |  | 1,061 | 113,763 |  | — | — |  | 1,061 | 113,763
Consumer installment |  | 125 | 9,125 |  | — | — |  | 125 | 9,125
|  | Total | $ | 4,431 | 428,596 |  | 97 | 2,653 |  | 4,528 | 431,249
(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
June 30, 2017: |  |  |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 50,148 |  | 183 |  | 609 |  | 34 |  | $ | 50,974
Construction and land development |  | 45,912 |  | 188 |  | 286 |  | — |  |  | 46,386
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |
| Owner occupied |  | 38,191 |  | 402 |  | 347 |  | — |  |  | 38,940
| Multi-family |  | 47,206 |  | — |  | — |  | — |  |  | 47,206
| Other |  | 131,739 |  | — |  | 1,181 |  | 1,797 |  |  | 134,717
|  | Total commercial real estate |  | 217,136 |  | 402 |  | 1,528 |  | 1,797 |  |  | 220,863
Residential real estate: |  |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  | 57,975 |  | 2,576 |  | 3,405 |  | 406 |  |  | 64,362
| Investment property |  | 44,812 |  | 103 |  | 1,011 |  | — |  |  | 45,926
|  | Total residential real estate |  | 102,787 |  | 2,679 |  | 4,416 |  | 406 |  |  | 110,288
Consumer installment |  | 9,240 |  | 54 |  | 97 |  | 18 |  |  | 9,409
|  | Total | $ | 425,223 |  | 3,506 |  | 6,936 |  | 2,255 |  | $ | 437,920
December 31, 2016: |  |  |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 49,558 |  | 22 |  | 233 |  | 37 |  | $ | 49,850
Construction and land development |  | 41,165 |  | 113 |  | 340 |  | 32 |  |  | 41,650
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |
| Owner occupied |  | 48,788 |  | 414 |  | 405 |  | 138 |  |  | 49,745
| Multi-family |  | 46,998 |  | — |  | — |  | — |  |  | 46,998
| Other |  | 121,326 |  | 32 |  | 449 |  | 1,889 |  |  | 123,696
|  | Total commercial real estate |  | 217,112 |  | 446 |  | 854 |  | 2,027 |  |  | 220,439
Residential real estate: |  |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  | 59,450 |  | 2,613 |  | 3,278 |  | 223 |  |  | 65,564
| Investment property |  | 44,109 |  | 105 |  | 1,048 |  | 29 |  |  | 45,291
|  | Total residential real estate |  | 103,559 |  | 2,718 |  | 4,326 |  | 252 |  |  | 110,855
Consumer installment |  | 8,580 |  | 20 |  | 90 |  | 22 |  |  | 8,712
|  | Total | $ | 419,974 |  | 3,319 |  | 5,843 |  | 2,370 |  | $ | 431,506
Impaired Financing Receivables [Table Text Block] |
|  |  |  |  |  |  | June 30, 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 |  | 2,852 | (1,055) | 1,797 |  |  |
|  | Total commercial real estate |  | 2,852 | (1,055) | 1,797 |  |  |
|  | Total | $ | 2,852 | (1,055) | 1,797 |
With allowance recorded: |
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied | $ | 184 | — | 184 |  | $ | 22
|  | Total commercial real estate |  | 184 | — | 184 |  |  | 22
|  | Total |  | 184 | — | 184 |  |  | 22
|  | Total impaired loans | $ | 3,036 | (1,055) | 1,981 |  | $ | 22
(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, 2016
(In thousands) |  | Unpaid principal balance (1) | Charge-offs and payments applied (2) | Recorded investment (3) |  |  | Related allowance
With no allowance recorded:
Commercial and industrial | $ | 15 | — | 15 |  |  |
Construction and land development |  | 140 | (108) | 32 |  |  |
Commercial real estate: |  |  |  |  |  |  |
| Other |  | 2,874 | (984) | 1,890 |  |  |
|  | Total commercial real estate |  | 2,874 | (984) | 1,890 |  |  |
|  | Total | $ | 3,029 | (1,092) | 1,937 |
With allowance recorded: |
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied | $ | 193 | — | 193 |  | $ | 31
|  | Total commercial real estate |  | 193 | — | 193 |  |  | 31
|  | Total |  | 193 | — | 193 |  |  | 31
|  | Total impaired loans | $ | 3,222 | (1,092) | 2,130 |  | $ | 31
(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 June 30, 2017 |  | Six months ended June 30, 2017
|  |  |  |  |  |  | Average |  | Total interest |  | Average |  | Total interest
|  |  |  |  |  |  | recorded |  | income |  | recorded |  | income
(In thousands) |  | investment |  | recognized |  | investment |  | recognized
Impaired loans:
Commercial and industrial | $ | 2 |  | — |  | 6 |  | —
Construction and land development |  | 15 |  | — |  | 21 |  | —
Commercial real estate: |  |  |  |  |  |  |  |
| Owner occupied |  | 186 |  | 2 |  | 189 |  | 5
| Other |  | 1,821 |  | — |  | 1,845 |  | —
|  | Total commercial real estate |  | 2,007 |  | 2 |  | 2,034 |  | 5
|  | Total | $ | 2,024 |  | 2 |  | 2,061 |  | 5
|  |  |  |  |  |  | Quarter ended June 30, 2016 |  | Six months ended June 30, 2016
|  |  |  |  |  |  | Average |  | Total interest |  | Average |  | Total interest
|  |  |  |  |  |  | recorded |  | income |  | recorded |  | income
(In thousands) |  | investment |  | recognized |  | investment |  | recognized
Impaired loans:
Commercial and industrial | $ | 36 |  | 1 |  | 40 |  | 2
Construction and land development |  | 60 |  | — |  | 138 |  | —
Commercial real estate: |  |  |  |  |  |  |  |
| Owner occupied |  | 1,009 |  | 11 |  | 1,015 |  | 26
| Other |  | 1,699 |  | — |  | 1,718 |  | —
|  | Total commercial real estate |  | 2,708 |  | 11 |  | 2,733 |  | 26
Residential real estate: |  |  |  |  |  |  |  |
|  | Total | $ | 2,804 |  | 12 |  | 2,911 |  | 28
Troubled Debt Restructurings on Financing Receivables, Accrual Status [Table Text Block] |
|  |  |  |  |  |  | TDRs
|  |  |  |  |  |  |  |  |  |  |  | Related
(In thousands) |  | Accruing | Nonaccrual | Total |  |  | Allowance
June 30, 2017 |  |  |  |  |  |  |
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied |  | 184 | — | 184 |  |  | 22
| Other |  | — | 1,735 | 1,735 |  |  | —
|  | Total commercial real estate |  | 184 | 1,735 | 1,919 |  |  | 22
|  | Total | $ | 184 | 1,735 | 1,919 |  | $ | 22
December 31, 2016 |  |
Commercial and industrial | $ | 15 | — | 15 |  | $ | —
Construction and land development |  | — | 32 | 32 |  |  | —
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied |  | 193 | — | 193 |  |  | 31
| Other |  | — | 1,818 | 1,818 |  |  | —
|  | Total commercial real estate |  | 193 | 1,818 | 2,011 |  |  | 31
|  | Total | $ | 208 | 1,850 | 2,058 |  | $ | 31
Troubled Debt Restructuring Modifications [Table Text Block] |
|  |  |  |  |  | Quarter ended June 30, |  |  | Six months ended June 30,
|  |  |  |  |  |  |  |  | Pre- |  | Post - |  |  |  |  |  | Pre- |  | Post -
|  |  |  |  |  |  |  |  | modification |  | modification |  |  |  |  |  | modification |  | modification
|  |  |  |  |  | Number |  |  | outstanding |  | outstanding |  |  | Number |  |  | outstanding |  | outstanding
|  |  |  |  |  | of |  |  | recorded |  | recorded |  |  | of |  |  | recorded |  | recorded
(Dollars in thousands) | contracts |  |  | investment |  | investment |  |  | contracts |  |  | investment |  | investment
2017: |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Other | 1 |  | $ | 1,275 |  | 1,266 |  |  | 1 |  | $ | 1,275 |  | 1,266
|  | Total commercial real estate | 1 |  |  | 1,275 |  | 1,266 |  |  | 1 |  |  | 1,275 |  | 1,266
|  | Total | 1 |  | $ | 1,275 |  | 1,266 |  |  | 1 |  | $ | 1,275 |  | 1,266
2016: |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Other | 1 |  |  | 1,509 |  | 1,509 |  |  | 1 |  |  | 1,509 |  | 1,509
|  | Total commercial real estate | 1 |  |  | 1,509 |  | 1,509 |  |  | 1 |  |  | 1,509 |  | 1,509
|  | Total | 1 |  | $ | 1,509 |  | 1,509 |  |  | 1 |  | $ | 1,509 |  | 1,509

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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 55 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=32702940&loc=SL6953803-111525 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953659-111524 + Details
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- Definition Tabular disclosure of financing receivables and troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524 + Details
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