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Employee Benefit Plans | 12 Months Ended
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Dec. 31, 2020
Retirement Benefits [Abstract] |
Employee Benefit Plans | Employee Benefit Plans The Corporation sponsors a contributory defined contribution Section 401(k) plan. The plan permits eligible employees to make pre-tax and Roth contributions up to 70% of salary. Employees 21 years of age or over with a minimum of one-year with 1,000 hours of service are eligible for matching contributions by the Corporation at 100% for every 1% contributed up to 3% then 50% for every 1% contributed up to the next 2% in total of the employee’s compensation. The Corporation’s matching contribution and related expenses were $1,050, $906 and $810 for the years ended December 31, 2020, December 31, 2019, and December 31, 2018, respectively. A profit sharing discretionary non-contributory pension plan component is in place for employees 21 years of age or over with a minimum of one-year with 1,000 hours of service and allows employer contributions in an amount equal to a percentage of eligible compensation plus 5.7% of the compensation in excess of $138, subject to a $285 salary limit. The Corporation recognized profit sharing expense of $1,936, $1,949 and $1,530 for the year ended December 31, 2020, December 31, 2019, and December 31, 2018 respectively. The Corporation has adopted a non-qualified supplemental executive retirement plan ("SERP") for certain executives to compensate those executive participants in the Corporation’s retirement plan whose benefits are limited by compensation limitations under current tax law. The SERP is considered an unfunded plan for tax and ERISA purposes and all obligations arising under the SERP are payable from the general assets of the Corporation. At December 31, 2020 and December 31, 2019, obligations of $7,007 and $6,333, respectively, were included in other liabilities for this plan. Expenses related to this plan were $992 for the year ended December 31, 2020, $724 for the year ended December 31, 2019 and $776 for the year ended December 31, 2018. The Corporation has established a Survivor Benefit Plan for the benefit of outside directors. The purpose of the plan is to provide life insurance benefits to beneficiaries of the Corporation’s directors who at the time of their death are participants in the plan. The plan is considered an unfunded plan for tax and ERISA purposes and all obligations arising under the plan are payable from the general assets of the Corporation. At December 31, 2020 and December 31, 2019, obligations of $1,433 and $1,330, respectively, were included in other liabilities for this plan. Expenses (benefits) related to this plan were $253 for the year ended December 31, 2020, $(1) for the year ended December 31, 2019 and $66 for the year ended December 31, 2018. The Corporation has an unfunded post retirement benefits plan which provides certain health care benefits for retired employees who have reached the age of 60 and retired with 30 years of service. The plan was amended in 2013 to include only employees hired prior to January 1, 2000. Benefits are provided for these retired employees and their qualifying dependents from the age of 60 through the age of 65. The following table sets forth the change in the benefit obligation of the plan as of and for the years ended December 31, 2020 and December 31, 2019:
| December 31, 2020 |  | December 31, 2019 |  |
Benefit obligation at beginning of year | $ | 2,030 |  |  | $ | 2,427 |  |  |
Interest cost | 51 |  |  | 89 |  |  |
Service cost | 61 |  |  | 74 |  |  |
Actual claims | (36) |  |  | (42) |  |  |
Actuarial gain | (277) |  |  | (518) |  |  |
Benefit obligation at end of year | $ | 1,829 |  |  | $ | 2,030 |  |  |
Amounts recognized in accumulated other comprehensive income at December 31, 2020 and December 31, 2019 consist of:
| December 31, 2020 |  | December 31, 2019
Net actuarial gain | $ | 435 |  |  | $ | 158 |
Tax effect | (92) |  |  | (34) |
| $ | 343 |  |  | $ | 124 |
The accumulated benefit obligation was $1,828 and $2,030 at December 31, 2020 and December 31, 2019, respectively. The following table sets forth the components of net periodic benefit cost and other amounts recognized in other comprehensive income:
| December 31, 2020 |  | December 31, 2019 |  | December 31, 2018
Service cost | $ | 61 |  |  | $ | 74 |  |  | $ | 87 |
Interest cost | 51 |  |  | 89 |  |  | 83 |
Net amortization of transition obligation and actuarial loss | 0 |  |  | 23 |  |  | 84 |
Net periodic benefit cost | 112 |  |  | 186 |  |  | 254 |
Net gain | (277) |  |  | (518) |  |  | (404) |
Amortization | 0 |  |  | (23) |  |  | (84) |
Total recognized in other comprehensive income | (277) |  |  | (541) |  |  | (488) |
Total recognized in net periodic benefit cost and other comprehensive income | $ | (165) |  |  | $ | (355) |  |  | $ | (234) |
The estimated net gain that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next fiscal year is zero. The weighted average discount rate used to calculate net periodic benefit cost was 2.59% for year ended December 31, 2020, 3.78% for year ended December 31, 2019, and 3.13% for year ended December 31, 2018. The weighted average rate used to calculate accrued benefit obligations was 1.55% for year ended December 31, 2020, 2.59% for year ended December 31, 2019, and 3.78% for year ended December 31, 2018. The health care cost trend rate used to measure the expected costs of benefits is 5.0% for 2021 and thereafter. A one percent increase in the health care trend rates would result in an increase of $136 in the benefit obligation as of December 31, 2020, and would increase the service and interest costs by $8 in future periods. A similar one percent decrease in health care trend rates would result in a decrease of $124 and $9 in the benefit obligation and services and interest costs, respectively, at December 31, 2020.

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