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Employee Benefit Plans - Summary of Net Periodic Cost of Pension and Postretirement Benefit Plans (Details) - Pension Plan - Non-U.S. - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 103  
Interest cost 5  
Return on plan assets (4)  
Net periodic pension cost 104 $ 0
Total recognized in net periodic benefit cost $ 104  
Expected long-term rate of return on plan assets 0.50%