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Severance and Other Charges, net - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Outstanding liability on severance and other costs	$ 2,344,000		$ 2,344,000		$ 5,837,000
Impairment of assets held for sale				$ 4,000,000.0
Impairment of assets held-for-use		$ 0	15,600,000	0
Inventory write-offs	0	0	368,000	222,000
Intangible asset impairments	$ 0	$ 0	$ 4,708,000	$ 0

X

- 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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-Publisher FASB
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-SubTopic 10
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- Definition

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.

+ References

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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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