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Restructuring Charges (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Company's accrual for restructuring activities:-        
Beginning Restructuring Accrual Balance, as of December 31, 2016     $ 9,531  
Restructuring Charges $ 4,023 $ 2,205 5,455 $ 3,085
Restructuring Cash Payments     (5,326)  
Impact of foreign currency on restructuring reserve     524  
Ending Restructuring Accrual Balance, as of June 30, 2017 $ 10,184   $ 10,184