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Severance and Other Charges, net - Summary of Severance and Other Charges (Credits), net (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Restructuring and Related Activities [Abstract]        
Severance and other costs $ 4,794,000 $ 593,000 $ 5,332,000 $ 982,000
Fixed asset impairments and retirements 0 0 15,479,000 66,000
Inventory write-offs 368,000 222,000 368,000 222,000
Intangible asset impairments 0 0 4,708,000 0
Severance and other charges, net $ 5,162,000 $ 815,000 $ 25,887,000 $ 1,270,000