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Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2017
Retirement Benefits [Abstract] |
Unfunded Post Retirement Benefits Plan | The following table sets forth the change in the benefit obligation of the plan as of and for the years ended December 31, 2017, 2016, and 2015:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Benefit obligation at beginning of year |  | $ | 3,409 |  |  | $ | 3,066 |  |  | $ | 2,744 |
Interest cost |  |  | 114 |  |  |  | 108 |  |  |  | 90 |
Service cost |  |  | 103 |  |  |  | 103 |  |  |  | 96 |
Actual claims |  |  | (78 | ) |  |  | (151 | ) |  |  | (109 | )
Actuarial (gain) loss |  |  | (808 | ) |  |  | 283 |  |  |  | 245 |
Benefit obligation at end of year |  | $ | 2,740 |  |  | $ | 3,409 |  |  | $ | 3,066 |
Accumulated Other Comprehensive Income | Amounts recognized in accumulated other comprehensive income at December 31, 2017 and 2016 consist of:
|  | 2017 |  |  | 2016 |
Net actuarial loss |  | $ | (871 | ) |  | $ | (1,871 | )
Tax effect |  |  | 183 |  |  |  | 654 |
|  | $ | (688 | ) |  | $ | (1,217 | )
Recognized Net Periodic Benefit Cost and Other Comprehensive Income | The following table sets forth the components of net periodic benefit cost and other amounts recognized in other comprehensive income:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Service cost |  | $ | 103 |  |  | $ | 103 |  |  | $ | 96 |
Interest cost |  |  | 114 |  |  |  | 108 |  |  |  | 90 |
Net amortization of transition obligation and actuarial loss |  |  | 192 |  |  |  | 184 |  |  |  | 173 |
Net periodic benefit cost |  |  | 409 |  |  |  | 395 |  |  |  | 359 |
Net (gain) loss |  |  | (808 | ) |  |  | 282 |  |  |  | 311 |
Amortization of loss |  |  | (192 | ) |  |  | (184 | ) |  |  | (173 | )
Total recognized in other comprehensive income |  |  | (1,000 | ) |  |  | 98 |  |  |  | 138 |
Total recognized in net periodic benefit cost and other comprehensive income |  | $ | (591 | ) |  | $ | 493 |  |  | $ | 497 |

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- Definition Tabular disclosure of benefit obligations including accumulated benefit obligation and projected benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the changes in plan assets and benefit obligations recognized in other comprehensive income (loss) during the period. + References No definition available. + Details
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