Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Company's accrual for restructuring activities:-
Beginning Restructuring Accrual Balance, as of December 31, 2016			$ 10,620
Restructuring Charges	$ 7,321	$ 4,023	11,734	$ 5,455
Restructuring Cash Payments			(13,409)
Impact of foreign currency on restructuring reserve			(130)
Ending Restructuring Accrual Balance, as of June 30, 2017	$ 8,815		$ 8,815

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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