Severance Costs Related To Voluntary Separation Plan (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020 USD ($) employee	Jun. 30, 2020 USD ($) employee
Severance Costs Related To Voluntary Separation Plan
Severance Costs \| $	$ 7,437	$ 13,265
Number of corporate staff accepted voluntary separation package		53
Number of Employees accepted voluntary separation package	201	201

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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