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Postretirement Benefits (Tables)
 3 Months Ended
Mar. 31, 2023
Retirement Benefits [Abstract]  
Schedule of Pension Assets by Component at Fair Value Pension Assets: The following table presents the assets of the Company's Pension Plans at March 31, 2023 and December 31, 2022.
Pension Assets by Component at March 31, 2023

 Fair Value Determined by:  
 
Quoted Prices in
Active Markets
for Identical
Assets (Level 1)
Significant
Observable
Inputs (Level 2)
Significant
Unobservable
Inputs (Level 3)
Total
Amount
% of
Total
Corporate bonds:
Financial$— $22,482 $— $22,482 4 
Utilities— 20,838 — 20,838 4 
Energy— 7,564 — 7,564 2 
Other corporates— 26,433 — 26,433 5 
Total corporate bonds— 77,317 — 77,317 15 
Exchange traded fund(1)
276,478 — — 276,478 53 
U.S. Government and Agency— 76,643 — 76,643 15 
Other bonds— 202 — 202 — 
Guaranteed annuity contract(2)
— 43,297 — 43,297 8 
Short-term investments23,016 — — 23,016 4 
Other12,379 — — 12,379 2 
$311,873 $197,459 $— 509,332 97 
Other long-term investments(3)
13,767 3 
Total pension assets
$523,099 100 
(1)A fund including marketable securities that mirror the S&P 500 index.
(2)Representing a guaranteed annuity contract issued by Globe Life Inc.'s subsidiary, American Income Life Insurance Company, to fund the obligations of the American Income Life Insurance Company Collective Bargaining Agreement Employees Pension Plan.
(3)Included in other long-term investments is an investment fund that reports the Globe Life Inc. Pension Plan's pro-rata share of the limited partnership's net asset value per share or its equivalent (NAV), as a practical expedient for fair value. The Globe Life Inc. Pension Plan owns less than 1% of the investment fund. As of March 31, 2023, the expected term of the investment fund is approximately 2 years and the commitment of the investment is fully funded. The investment is non-redeemable.
Pension Assets by Component at December 31, 2022
 Fair Value Determined by:  
 
Quoted Prices in
Active Markets
for Identical
Assets (Level 1)
Significant
Observable
Inputs (Level 2)
Significant
Unobservable
Inputs (Level 3)
Total
Amount
% of
Total
Corporate bonds:
Financial$— $35,649 $— $35,649 7 
Utilities— 23,436 — 23,436 5 
Energy— 12,776 — 12,776 3 
Other corporates— 56,786 — 56,786 11 
Total corporate bonds— 128,647 — 128,647 26 
Exchange traded fund(1)
258,297 — — 258,297 52 
U.S. Government and Agency— 44,213 — 44,213 9 
Other bonds— 200 — 200 — 
Guaranteed annuity contract(2)
— 43,116 — 43,116 8 
Short-term investments4,467 — — 4,467 1 
Other6,547 — — 6,547 1 
$269,311 $216,176 $— 485,487 97 
Other long-term investments(3)
14,288 3 
Total pension assets
$499,775 100 
(1)A fund including marketable securities that mirror the S&P 500 index.
(2)Representing a guaranteed annuity contract issued by Globe Life Inc.'s subsidiary, American Income Life Insurance Company, to fund the obligations of the American Income Life Insurance Company Collective Bargaining Agreement Employees Pension Plan.
(3)Included in other long-term investments is an investment fund that reports the Globe Life Inc. Pension Plan's pro-rata share of the limited partnership's net asset value per share or its equivalent (NAV), as a practical expedient for fair value. The Globe Life Inc. Pension Plan owns approximately 1% of the investment fund. As of December 31, 2022, the expected term of the investment fund was approximately 3 years and the commitment of the investment is fully funded. The investment is non-redeemable.
Schedule of Information Regarding the SERP The following table includes information regarding the SERP.
Three Months Ended
March 31,
20232022
Premiums paid for insurance coverage$443 $443 
March 31,
2023		December 31,
2022
Total investments:
Company owned life insurance $54,788 $54,681 
Exchange traded funds74,632 71,258 
$129,420 $125,939 
Schedule of Pension Liability The following table presents liabilities for the defined benefit pension plans and SERP at March 31, 2023 and December 31, 2022.
March 31,
2023		December 31,
2022
Pension Plans$517,770 $492,103 
SERP70,499 70,464 
Pension benefit obligation
$588,269 $562,567 
Schedule of Net Periodic Benefit Cost The following table presents the net periodic benefit costs for the Pension Plans and SERP by expense components for the three months ended March 31, 2023 and 2022. Components of Net Periodic Benefit Cost
Three Months Ended
March 31,
 20232022
Service cost$5,392 $8,655 
Interest cost7,834 6,123 
Expected return on assets(9,656)(8,885)
Amortization:
Prior service cost269 158 
Actuarial (gain) loss(52)3,209 
Net periodic benefit cost
$3,787 $9,260