Restructuring Costs (Rollforward of Restructuring Cost Liabilities) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($)
Restructuring Reserve [Roll Forward]
Beginning balance	$ 814
Additions	5,076
Adjustments to accruals	(839)
Cash payments	(1,264)
Ending balance	3,787
Accrued compensation and related costs
Restructuring Reserve [Roll Forward]
Additions	5,076
Adjustments to accruals	(372)
Cash payments	(1,264)
Ending balance	3,782
Other accrued liabilities
Restructuring Reserve [Roll Forward]
Beginning balance	472
Additions	0
Adjustments to accruals	(467)
Cash payments	0
Ending balance	$ 5

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 expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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