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Restructuring Charges (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Company's accrual for restructuring activities:-        
Beginning Restructuring Accrual Balance, as of December 31, 2018     $ 7,972  
Restructuring Charges $ 6,732 $ 2,222 11,146 $ 13,956
Restructuring Cash Payments     (9,450)  
Impact of foreign currency on restructuring reserve     (243)  
Ending Restructuring Accrual Balance, as of September 30, 2019 $ 9,425   $ 9,425