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Discontinued Operations - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Depreciation and amortization $ 23,700,000 $ 35,100,000 $ 20,800,000
Goodwill impairment 0 0 0
Capital expenditure 29,400,000 22,600,000 14,900,000
Share-based compensation expense 900,000 1,400,000 1,500,000
Accumulated other comprehensive income (loss), net of tax 42,300,000    
Discontinued Operations, Held-for-sale      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Impairment of the disposal group 179,300,000    
Translation exchange rates 180,400,000    
Grass Valley      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Impairment of the disposal group 521,400,000    
Grass Valley | Discontinued Operations, Held-for-sale      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Impairment of the disposal group 521,441,000 $ 0 $ 0
Goodwill impairment 326,100,000    
Impairment of the disposal group 179,300,000    
Translation exchange rates 180,400,000    
Customer relationships | Discontinued Operations, Held-for-sale      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Impairment of intangible assets 14,400,000    
Customer relationships | Grass Valley | Discontinued Operations, Held-for-sale      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Impairment of intangible assets 14,400,000    
Trademarks | Discontinued Operations, Held-for-sale      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Impairment of intangible assets 1,600,000    
Trademarks | Grass Valley | Discontinued Operations, Held-for-sale      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Impairment of intangible assets $ 1,600,000