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Retirement Plans (Tables)
 12 Months Ended
Dec. 31, 2020
Retirement Benefits [Abstract]  
Domestic Retirement Plan's Financial Status and Amounts Recognized in Consolidated Balance Sheets
The following table sets forth the U.S. Retirement Plan’s financial status and the amounts recognized in our consolidated balance sheets:
December 31,20202019
Change in benefit obligation
Benefit obligation, beginning of year$53,602 $48,163 
Interest cost1,420 1,858 
Actuarial loss6,632 7,075 
Benefits paid(4,270)(3,494)
Benefit obligation, end of year$57,384 $53,602 
Change in plan assets
Fair value of plan assets, beginning of year$— $— 
Employer contribution4,270 3,494 
Benefits paid(4,270)(3,494)
Fair value of plan assets, end of year$— $— 
Funded status, end of year$(57,384)$(53,602)
Amounts recognized in the consolidated balance sheets
Other current liabilities$(3,933)$(3,929)
Other liabilities(53,451)(49,672)
Accumulated other comprehensive loss25,492 19,732 
Net amount recognized$(31,892)$(33,869)
Accumulated benefit obligation$57,384 $53,602 
Weighted average assumptions used to determine benefit obligation
Discount rate1.95 %2.75 %
Rate of increase in compensation levelsN/AN/A
Components of Net Periodic Benefit Cost for Domestic Retirement Plan The components of net periodic benefit cost for the U.S. Retirement Plan were as follows:
Year ended December 31,20202019
Interest cost$1,420 $1,858 
Recognized net actuarial loss872 1,065 
Net periodic benefit cost$2,292 $2,923 
Weighted average assumptions used to determine net periodic benefit cost
Discount rate2.75 %4.00 %
Rate of increase in future compensation levelsN/AN/A
Amounts Recognized As Component of Accumulated Other Comprehensive Loss, Domestic We expect to recognize approximately $1.2 million of the net actuarial loss reported in the following table as of December 31, 2020, as a component of net periodic benefit cost during 2021.
Year ended December 31,20202019
Net actuarial loss$(25,492)$(19,732)
Deferred tax benefit9,552 7,866 
Amounts included in accumulated other comprehensive loss, net of tax$(15,940)$(11,866)
Expected Benefit Payments Required For Domestic Retirement Plan
As of December 31, 2020, the expected benefit payments required for each of the next five years and the five-year period thereafter for the U.S. Retirement Plan were as follows:
Year 
2021$3,914 
20223,794 
20233,674 
20243,545 
20253,417 
2026-203014,962