Restructuring - Restructuring activity (Details) - Business realignment plan $ in Thousands	1 Months Ended	3 Months Ended
Dec. 31, 2019 USD ($) item	Mar. 31, 2020 USD ($)
Restructuring
Number of positions to be eliminated \| item	80
Accrued Employee Severance and Benefits
Restructuring activity
Restructuring Reserve, Beginning Balance		$ 2,249
Additional accruals		0
Adjustments		0
Cash payments		2,224
Restructuring Reserve, Ending Balance	$ 2,249	$ 25

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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-Name Accounting Standards Codification
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- Definition

The number of positions eliminated during the period as a result of restructuring activities.

+ References

No definition available.

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- Definition

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.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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.

+ References

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- Definition

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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- Definition

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

+ References

No definition available.

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