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Goodwill and Intangible Assets (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) reporting_unit	Sep. 30, 2023 USD ($) reporting_unit	Sep. 30, 2024 USD ($) reporting_unit	Sep. 30, 2023 USD ($) reporting_unit	Dec. 31, 2023 USD ($)
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment on business	$ 85,273	$ 56,850	$ 85,273	$ 56,850
Goodwill	1,572,854		1,572,854		$ 1,546,065
Amortization expense	28,500	33,000	82,500	100,000
Digital Media
Finite-Lived Intangible Assets [Line Items]
Goodwill accumulated impairment loss	169,500		169,500		84,200
Goodwill impairment on business	85,300	$ 56,900	85,300	$ 56,900
Digital Media \| Operating Segments
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment on business			85,273
Goodwill	$ 1,041,338		$ 1,041,338		$ 1,016,880
Digital Media \| Operating Segments \| Digital Media Subsegment
Finite-Lived Intangible Assets [Line Items]
Number of Reporting Units \| reporting_unit	2	1	2	1
Number of reporting units with additional risk of impairment \| reporting_unit	1
Number of reporting units with risk of impairment \| reporting_unit	3
Digital Media \| Operating Segments \| Digital Media Subsegment, Two
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 498,400		$ 498,400