Content Production Assets, Net (Schedule Of Amortization And Impairment Of Content Production Assets) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Content Production Assets, Net [Abstract]
Content production amortization expense - assets monetized individually		$ 7,464	$ 7,507
Content production amortization expense - assets monetized as a film group		1,287	1,231
Content production impairment charge	[1]	160	198
Content production development write-offs	[2]		16
Total amortization and impairment of content production assets		$ 8,911	$ 8,952

[1] Unamortized content production assets are evaluated for impairment whenever events or changes in circumstances indicate that the fair value of a film predominantly monetized on its own or a film group may be less than its unamortized costs. If conditions indicate a potential impairment, and the estimated future cash flows are not sufficient to recover the unamortized asset, the asset is written down to fair value. In addition, if we determine that content will not likely air, we will expense the remaining unamortized asset.

[2] Capitalized script development costs are evaluated at each reporting period for impairment and to determine if a project is deemed to be abandoned.