Balance Sheet Components - Property And Equipment And Accumulated Depreciation (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 727,115	$ 641,218
Less: Accumulated depreciation	(355,963)	(321,814)
Property and equipment, net	371,152	319,404
Accrued participation liabilities, due in next operating cycle	0
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	273,292	229,848
Information technology
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 222,966	223,850
Estimated Useful Lives	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 60,217	49,217
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	3 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	15 years
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 40,681	40,681
Estimated Useful Lives	30 years
Corporate aircraft
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 58,058	30,039
Estimated Useful Lives	8 years
DVD operations equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 58,175	59,316
Estimated Useful Lives	5 years
Capital work-in-progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 13,726	$ 8,267