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8. Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2018
Income Tax Disclosure [Abstract] |
Components of income tax expense (benefit) |
(Dollars in thousands) |  |  |  |  |  |
|  | 2018 |  | 2017 |  | 2016
Current expense |  | $ | 2,546 |  |  |  | 1,827 |  |  |  | 1,464 |
Deferred income tax expense |  |  | 78 |  |  |  | 2,120 |  |  |  | 1,097 |
Total income tax |  | $ | 2,624 |  |  |  | 3,947 |  |  |  | 2,561 |
Schedule of effective income Tax rate reconciliation |
(Dollars in thousands) |  |  |  |  |  |
|  | 2018 |  | 2017 |  | 2016
Tax expense at statutory rate (21% in 2018) |  | $ | 3,361 |  |  |  | 4,833 |  |  |  | 3,991 |
State income tax, net of federal income tax effect |  |  | 358 |  |  |  | 307 |  |  |  | 339 |
Tax-exempt interest income |  |  | (990 | ) |  |  | (1,594 | ) |  |  | (1,681 | )
Increase in cash surrender value of life insurance |  |  | (81 | ) |  |  | (136 | ) |  |  | (138 | )
Nondeductible interest and other expense |  |  | 23 |  |  |  | 46 |  |  |  | 78 |
Impact of TCJA |  |  | — |  |  |  | 588 |  |  |  | — |
Other |  |  | (47 | ) |  |  | (97 | ) |  |  | (28 | )
Total |  | $ | 2,624 |  |  |  | 3,947 |  |  |  | 2,561 |
Schedule of deferred tax assets and liabilities |
(Dollars in thousands) |  |  |  |
|  | 2018 |  | 2017
Deferred tax assets: |  |  |  |  |  |  |  |
Allowance for loan losses |  | $ | 1,481 |  |  |  | 1,463 |
Accrued retirement expense |  |  | 1,119 |  |  |  | 1,073 |
Federal credit carryforward |  |  | — |  |  |  | 88 |
Restricted stock |  |  | 262 |  |  |  | 243 |
Accrued bonuses |  |  | 211 |  |  |  | 171 |
Interest income on nonaccrual loans |  |  | 1 |  |  |  | 5 |
Other than temporary impairment |  |  | — |  |  |  | 9 |
Total gross deferred tax assets |  |  | 3,074 |  |  |  | 3,052 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Deferred loan fees |  |  | 379 |  |  |  | 365 |
Accumulated depreciation |  |  | 610 |  |  |  | 498 |
Prepaid expenses |  |  | 10 |  |  |  | 14 |
Other |  |  | 5 |  |  |  | 28 |
Unrealized gain on available for sale securities |  |  | 294 |  |  |  | 1,072 |
Total gross deferred tax liabilities |  |  | 1,298 |  |  |  | 1,977 |
Net deferred tax asset |  | $ | 1,776 |  |  |  | 1,075 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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