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Employee Benefit Plans
 12 Months Ended
Dec. 31, 2020
Retirement Benefits [Abstract]  
Employee Benefit Plans
NOTE 16 – EMPLOYEE BENEFIT PLANS
The following summarizes retirement plan expense for the years ended December 31:
202020192018
 (in thousands)
401(k) Retirement Plan$9,853 $8,976 $8,482 
Pension Plan660 2,484 3,435 
Total$10,513 $11,460 $11,917 

The 401(k) Retirement Plan is a defined contribution plan under which eligible employees may defer a portion of their pre-tax covered compensation on an annual basis, with employer matches of up to 5% of employee compensation. Employee and employer contributions under these features are 100% vested.

Contributions to the Defined Benefit Pension Plan ("Pension Plan") are actuarially determined and funded annually, if necessary. The Corporation recognizes the funded status of its Pension Plan on the consolidated balance sheets and recognizes the changes in that funded status through other comprehensive income. The Pension Plan has been curtailed, with no additional benefits accruing to participants.
Pension Plan

The net periodic pension cost for the Pension Plan, as determined by consulting actuaries, consisted of the following components for the years ended December 31:
202020192018
 (in thousands)
Interest cost$2,726 $3,257 $3,053 
Expected return on assets(3,925)(2,754)(2,047)
Net amortization and deferral1,859 1,981 2,429 
Net periodic pension cost$660 $2,484 $3,435 
The following table summarizes the changes in the projected benefit obligation and fair value of plan assets for the plan years ended December 31:
20202019
 (in thousands)
Projected benefit obligation at beginning of year$86,204 $79,426 
Interest cost2,726 3,257 
Benefit payments(4,104)(4,114)
Change in assumptions7,532 8,259 
Experience gain(66)(624)
Projected benefit obligation at end of year$92,292 $86,204 
Fair value of plan assets at beginning of year$83,676 $57,825 
Employer contributions (1)
— 20,755 
Actual return on plan assets7,605 9,210 
Benefit payments(4,104)(4,114)
Fair value of plan assets at end of year$87,177 $83,676 
(1)    The Corporation funds at least the minimum amount required by federal law and regulations. The Corporation contributed $20.8 million to the Pension Plan during 2019.

The following table presents the funded status of the Pension Plan, included in other liabilities on the consolidated balance sheets, as of December 31:
20202019
 (in thousands)
Projected benefit obligation$(92,292)$(86,204)
Fair value of plan assets87,177 83,676 
Funded status$(5,115)$(2,528)

The following table summarizes the changes in the unrecognized net loss included as a component of accumulated other comprehensive income (loss):
 Unrecognized Net Loss 
 Before taxNet of tax
 (in thousands)
Balance as of December 31, 2018$24,347 $18,961 
Recognized as a component of 2019 periodic pension cost(1,981)(1,543)
Unrecognized gains arising in 20191,180 919 
Balance as of December 31, 201923,546 18,337 
Recognized as a component of 2020 periodic pension cost(1,859)(1,452)
Unrecognized losses arising in 20203,787 2,958 
Balance as of December 31, 2020$25,474 $19,843 
The total amount of unrecognized net loss that will be amortized as a component of net periodic pension cost in 2021 is expected to be $2.3 million.

The following rates were used to calculate the net periodic pension cost and the present value of benefit obligations as of December 31:
202020192018
Discount rate-projected benefit obligation2.50 %3.25 %4.25 %
Expected long-term rate of return on plan assets5.00 %5.00 %5.00 %

The discount rates used were determined using the Citigroup Average Life discount rate table, as adjusted based on the Pension Plan's expected benefit payments and rounded to the nearest 0.25%.
The 5.00% long-term rate of return on plan assets used to calculate the net periodic pension cost was based on historical returns, adjusted for expectations of long-term asset returns based on the December 31, 2020 weighted average asset allocations. The expected long-term return is considered to be appropriate based on the asset mix and the historical returns realized.

The following table presents a summary of the fair values of the Pension Plan’s assets as of December 31:
 20202019
 Estimated
Fair Value		% of Total
Assets		Estimated
Fair Value		% of Total
Assets
 (dollars in thousands)
Equity mutual funds$37,847 $26,377 
Equity common trust funds12,450 11,810 
Equity securities50,297 57.7 %38,187 45.6 %
Cash and money market funds9,444 21,182 
Fixed income mutual funds16,134 14,370 
Corporate debt securities3,319 3,124 
U.S. Government agency securities6,257 3,078 
Fixed income securities and cash35,154 40.3 %41,754 49.9 %
Other alternative investment funds1,726 2.0 %3,735 4.5 %
Total$87,177 100.0 %$83,676 100.0 %

Investment allocation decisions are made by a retirement plan committee. The goal of the investment allocation strategy is to match certain benefit obligations with maturities of fixed income securities. Alternative investments may include managed futures, commodities, real estate investment trusts, master limited partnerships, and long-short strategies with traditional stocks and bonds. All alternative investments are in the form of mutual funds, not individual contracts, to enable daily liquidity.
The fair values for assets held by the Pension Plan are based on quoted prices for identical instruments and would be categorized as Level 1 assets under the fair value hierarchy.

Estimated future benefit payments are as follows (in thousands):
Year 
2021$4,399 
20224,452 
20234,565 
20244,652 
20254,724 
Thereafter24,461 
Total$47,253 
Postretirement Benefits

The Corporation provides medical benefits and life insurance benefits under a postretirement benefits plan ("Postretirement Plan") to certain retired full-time employees who were employees of the Corporation prior to January 1, 1998. Prior to February 1, 2014, certain full-time employees became eligible for these discretionary benefits if they reached retirement age while working for the Corporation. The Corporation recognizes the funded status of the postretirement plan on the consolidated balance sheets and recognizes the changes in that funded status through other comprehensive income.

The components of the net benefit for Postretirement Plan other than pensions are as follows:
202020192018
 (in thousands)
Interest cost$43 $61 $57 
Net amortization and deferral(548)(556)(559)
Net postretirement benefit$(505)$(495)$(502)

This table summarizes the changes in the accumulated postretirement benefit obligation for the years ended December 31:
20202019
 (in thousands)
Accumulated postretirement benefit obligation at beginning of year$1,450 $1,520 
Interest cost43 61 
Benefit payments(177)(187)
Change in experience(32)17 
Change in assumptions38 39 
Accumulated postretirement benefit obligation at end of year$1,322 $1,450 

The fair values of the plan assets were $0 as of both December 31, 2020 and 2019. The funded status of the Postretirement Plan, included in other liabilities on the consolidated balance sheets as of December 31, 2020 and 2019 was $1.3 million and $1.5 million, respectively. The following table summarizes the changes in items recognized as a component of accumulated other comprehensive income (loss):
 Before tax 
 Unrecognized
Prior Service
Cost		Unrecognized
Net Loss (Gain)		TotalNet of tax
 (in thousands)
Balance as of December 31, 2018$(3,940)$(1,096)$(5,036)$(3,928)
Recognized as a component of 2019 postretirement cost464 92 556 433 
Unrecognized gains arising in 2019— 56 56 44 
Balance as of December 31, 2019(3,476)(948)(4,424)(3,451)
Recognized as a component of 2020 postretirement cost464 84 548 428 
Unrecognized gains arising in 2020— 6 6 5 
Balance as of December 31, 2020$(3,012)$(858)$(3,870)$(3,018)

The following rates were used to calculate net periodic postretirement benefit cost and the present value of benefit obligations as of December 31:
202020192018
Discount rate-projected benefit obligation2.50 %3.25 %4.25 %
Expected long-term rate of return on plan assets3.00 %3.00 %3.00 %
The discount rates used to calculate the accumulated postretirement benefit obligation were determined using the Citigroup Average Life discount rate table, as adjusted based on the Postretirement Plan's expected benefit payments and rounded to the nearest 0.25%.
Estimated future benefit payments under the Postretirement Plan are as follows (in thousands):
Year 
2021$161 
2022149 
2023138 
2024126 
2025115 
Thereafter426 
Total $1,115