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Federal Income Taxes | 6 Months Ended
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Jun. 30, 2018
Income Tax Disclosure [Abstract] |
Federal Income Taxes | Federal Income Taxes The reconciliation of the provision for federal income taxes and the amount computed at the federal statutory tax rate of income before federal income tax expense, which has significantly changed as a result of 2017 Tax Act, is as follows for the:
| Three Months Ended June 30 |  | Six Months Ended June 30
| 2018 |  | 2017 |  | 2018 |  | 2017
Income taxes at statutory rate (21% in 2018 and 34% in 2017) | $ | 755 |  |  | $ | 1,612 |  |  | $ | 1,538 |  |  | $ | 2,859 |
Effect of nontaxable income |  |  |  |  |  |  |
Interest income on tax exempt municipal securities | (264 | ) |  | (454 | ) |  | (538 | ) |  | (909 | )
Earnings on corporate owned life insurance policies | (38 | ) |  | (62 | ) |  | (74 | ) |  | (123 | )
Effect of tax credits | (201 | ) |  | (191 | ) |  | (401 | ) |  | (380 | )
Other | (8 | ) |  | (18 | ) |  | (19 | ) |  | (36 | )
Total effect of nontaxable income | (511 | ) |  | (725 | ) |  | (1,032 | ) |  | (1,448 | )
Effect of nondeductible expenses | 19 |  |  | 11 |  |  | 22 |  |  | 19 |
Federal income tax expense | $ | 263 |  |  | $ | 898 |  |  | $ | 528 |  |  | $ | 1,430 |

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 + Details
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