Condensed Consolidated Statements of Cash Flows Supplemental Information - Summary of Depreciation and Amortization (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Summary of Depreciation and amortization
Film assets	$ 6,159	$ 13,015
Property, plant and equipment:
Joint revenue sharing arrangements	19,247	17,179
Other property, plant and equipment	8,478	9,100
Other intangible assets	4,882	4,568
Other assets	1,933	1,262
Deferred financing costs	595	376
Depreciation and amortization	$ 41,294	$ 45,500