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Severance and Other Charges (Credits), net - Summary of Severance and Other Charges (Credits), net (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Restructuring and Related Activities [Abstract]          
Severance and other costs     $ 12,284,000 $ 9,744,000 $ 4,552,000
Fixed asset impairments and retirements $ 15,500,000 $ 28,800,000 15,664,000 32,916,000 0
Inventory impairments   4,200,000 367,000 4,471,000 0
Intangible asset impairments $ 4,700,000 $ 3,300,000 4,708,000 3,299,000 0
Accounts receivable write-off (recovery)     0 0 (4,862,000)
Severance and other charges (credits), net     $ 33,023,000 $ 50,430,000 $ (310,000)