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Restructuring Charges (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Company's accrual for restructuring activities:-        
Beginning Restructuring Accrual Balance, as of December 31, 2018     $ 9,184  
Restructuring Charges $ 876 $ 860 2,069 $ 2,765
Restructuring Cash Payments     (5,548)  
Impact of foreign currency on restructuring reserve     (210)  
Ending Restructuring Accrual Balance, as of September 30, 2019 $ 5,495   $ 5,495