Severance and Other Charges, net - Summary of Severance and Other Charges (Credits), net (Details) - USD ($)	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Restructuring and Related Activities [Abstract]
Severance and other costs	$ 265,000	$ 538,000
Mergers and acquisition expense	6,804,000	0
Fixed asset impairments and retirements	171,000	15,479,000
Inventory write-offs	136,000	0
Intangible asset impairments	0	4,708,000
Severance and other charges, net	$ 7,376,000	$ 20,725,000

Restructuring, Settlement And Impairment Provisions (Credits)

No definition available.

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

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-SubTopic 10
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- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

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- Definition

Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=116847112&loc=d3e4542-108314

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- 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.

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- Definition

The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

+ References

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-Name Accounting Standards Codification
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