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Pension and Other Post-Retirement Benefits (Tables)
9 Months Ended
Sep. 30, 2021
Retirement Benefits [Abstract]  
Schedule of changes in projected benefit obligations, the plan assets, and the funded
Summary of the amounts recognized in the consolidated balance sheets
Schedule of accumulated benefit obligation in excess of plan assets and projected benefit obligations in excess of plan assets
Schedule of net periodic benefit cost changes in plan assets and benefit obligations recognized in other comprehensive loss The components of net periodic benefit cost changes in plan assets and benefit obligations recognized as follows:
Three Months Ended September 30,
20212020
Service cost$368 $226 
Interest cost82 79 
Expected return on plan assets(52)(40)
Amortization of actuarial gains(4)(19)
Net periodic benefit cost$394 $246 
Nine Months Ended September 30,
20212020
Service cost$1,104 $661 
Interest cost246 235 
Expected return on plan assets(156)(118)
Amortization of actuarial gains(12)(57)
Net periodic benefit cost$1,182 $721 
Summary of weighted-average assumptions used to determine the benefit obligations
Schedule of fair value of our plan assets and the respective level in the far value hierarchy by asset category
Schedule of estimated pension benefit payments