Severance and Other Charges, net - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Outstanding liability on severance and other costs	$ 3,986,000		$ 3,986,000		$ 5,837,000
Impairment of assets held for sale				$ 100,000
Impairment of assets held-for-use	0	$ 0	15,500,000	0
Inventory write-offs	368,000	222,000	368,000	222,000
Intangible asset impairments	$ 0	$ 0	$ 4,708,000	$ 0

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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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-Subparagraph (b)
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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.

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