Restructuring and Impairment Charges (Components of Restructuring and Impairment Charges) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring and Impairment Charges [Abstract]
Impairment and loss on right of use asset	$ 17,540	$ 17,540		$ 17,540
Impairment and loss on disposal of machinery and equipment		9,031	$ 61	9,469	$ 1,380
Employee severance and retention		3,381	1,318	3,378	1,318
Goodwill impairment			21,521		21,521
Other charges related to facility closure		151	132	863	132
Total restructuring and impairment charges		$ 30,103	$ 23,032	$ 31,250	$ 24,351

Impairment And Gain Loss On Sale Of Property Plant Equipment

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from impairment of right-of-use asset from operating lease.

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Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

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Amount of restructuring charges, remediation cost, and asset impairment loss.

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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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