Summary of Significant Accounting Policies - Additional Information (Details)				1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 01, 2020 USD ($)	Jul. 19, 2018 USD ($)	Jul. 05, 2011 patent	Jul. 31, 2015 patent	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2019 USD ($) Reporting_Unit	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Feb. 04, 2020 USD ($)	Jan. 01, 2019 USD ($)
Significant Accounting Policies [Line Items]
Amount of inventory as a percentage of prior year purchases that can be returned by certain distributors							3.00%
Unprocessed adjustments recognized against gross accounts receivables					$ 25,500,000		$ 29,500,000	$ 25,500,000
Unprocessed adjustments recognized against accounts accrued liabilities					9,100,000		11,000,000.0	9,100,000
Bad debt expense, net of recoveries							100,000	200,000	$ 400,000
Allowance for doubtful accounts					3,100,000		2,600,000	3,100,000
Obsolescence and other reserves					17,364,000		$ 21,245,000	17,364,000
Number of reporting units used in quantitative assessment | Reporting_Unit							10
Accumulated other comprehensive losses recognized as result of sale of equity method investment					74,907,000		$ 63,418,000	74,907,000
Proceeds from disposal of business							0	40,171,000	0
Accrued sales rebates					41,312,000		37,170,000	41,312,000
Gain from patent litigation							0	62,141,000	0
Advertising costs							14,700,000	17,000,000.0	18,000,000.0
Valuation allowances					39,402,000		50,420,000	39,402,000
Tax Cuts and Jobs Act of 2017, income tax expense						$ 24,500,000
Tax Cuts and Jobs Act of 2017, remeasurement of deferred tax assets and liabilities								400,000	41,600,000
Tax Cuts and Jobs Act of 2017, transition tax for accumulated foreign earnings, income tax expense								1,300,000	30,800,000
Tax Cuts and Jobs Act of 2017, valuation allowance against foreign tax credit carryforward							(10,000,000.0)	8,000,000.0	35,300,000
SAB 118 Tax Expense					2,900,000			10,000,000.0
Tax Cuts and Jobs Act of 2017, income tax expense related to employee compensation								1,100,000
Goodwill impairment							0	0	0
Indefinite lived intangible asset impairment							0	0	0
Amortizable intangible asset impairment							0	0	0
Operating lease, asset							62,251,000
Operating lease, liability							69,552,000
Subsidiaries | Corning
Significant Accounting Policies [Line Items]
Number of patents allegedly infringed upon | patent			2
Proceeds from settlement		$ 62,100,000
Number of patents found infringed upon | patent				2
Grass Valley
Significant Accounting Policies [Line Items]
Impairment of the disposal group							521,400,000
Grass Valley | Discontinued Operations, Held-for-sale
Significant Accounting Policies [Line Items]
Impairment of the disposal group							521,441,000	0	0
Goodwill impairment							$ 326,100,000
Previously Closed Operating Facility | Discontinued Operations, Disposed of by Sale
Significant Accounting Policies [Line Items]
Disposition, sales price					$ 1,500,000			1,500,000
Gain on disposal								600,000
Hirschmann Jv | Discontinued Operations, Held-for-sale
Significant Accounting Policies [Line Items]
Disposition, sales price						40,200,000			40,200,000
Equity method investment, realized loss on disposal									1,000,000.0
Accumulated other comprehensive losses recognized as result of sale of equity method investment						$ 2,800,000			$ 2,800,000
Proceeds from disposal of business								$ 40,200,000
Minimum
Significant Accounting Policies [Line Items]
Estimated useful life of definite-lived intangible assets							1 year
Maximum
Significant Accounting Policies [Line Items]
Estimated useful life of definite-lived intangible assets							25 years
Buildings | Minimum
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment							P10Y
Buildings | Maximum
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment							P40Y
Machinery and equipment | Minimum
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment							P5Y
Machinery and equipment | Maximum
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment							P12Y
Computer Equipment and Software | Minimum
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment							P5Y
Computer Equipment and Software | Maximum
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment							P10Y
Accounting Standards Update 2016-02
Significant Accounting Policies [Line Items]
Operating lease, asset											$ 70,700,000
Operating lease, liability											$ 77,300,000
Subsequent Event | Grass Valley | Discontinued Operations, Disposed of by Sale
Significant Accounting Policies [Line Items]
Disposition, sales price										$ 140,000,000
Subsequent Event | Scenario, Forecast | Accounting Standards Update 2016-13
Significant Accounting Policies [Line Items]
Incease to allowance for doubtful accounts	$ 1,000,000.0
Increase to allowance for doubtful account, discontinued operations	$ 2,000,000.0
Hirschmann Jv
Significant Accounting Policies [Line Items]
Equity method investment, ownership percentage						50.00%			50.00%