Business Combinations and Other Transactions - Narrative (Details) patent_and_application in Thousands, coding_patent_and_application in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	May 31, 2019	Jul. 30, 2018 patent_and_application	Jul. 30, 2018 coding_patent_and_application
Business Acquisition [Line Items]
Interest expense debt		$ 6,828,000	$ 17,652,000	$ 17,087,000
Technicolor
Business Acquisition [Line Items]
Number of patents and applications							18	3
Receive future cash receipts percentage						42.50%
Combined accumulated projected benefit obligation	$ 7,000,000.0		7,000,000.0		$ 6,200,000
Service cost and interest cost			$ 300,000	100,000
Effective interest rate acquisition percentage	14.50%		14.50%
Interest expense debt	$ 800,000	700,000	$ 2,300,000	2,000,000.0
Transaction and integration related costs	600,000	$ 2,100,000	$ 1,800,000	$ 6,900,000
Technicolor | Shortfalls funding
Business Acquisition [Line Items]
Shortfall funding plus percentage			25.00%
Technicolor | Shortfalls funding | Maximum
Business Acquisition [Line Items]
Shortfalls funding amount	$ 25,000,000.0		$ 25,000,000.0