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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Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Restructuring Charges (Details) $ in Thousands	3 Months Ended		6 Months Ended
Restructuring Charges (Details) $ in Thousands	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)
Restructuring and related cost, positions eliminated
Restructuring charges	$ 0	$ 2,528	$ 836	$ 2,859
2019 Plan
Restructuring and related cost, positions eliminated
Restructuring and related cost, number of positions eliminated		80
Restructuring charges			$ 800