Restructuring and Other Related Charges (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	$ 17,162	$ 0	$ 19,804	$ 0
Severance and other personnel related costs	2,900		3,900
Restructuring charges	4,145		6,787
Accrued restructuring costs, accrued liabilities	11,800		11,800
Accrued restructuring costs, other liabilities (long-term)	5,500		5,500
Severance and employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,300		5,220
Other related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 13,000		$ 1,567

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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