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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Stock-Based Compensation - Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stock-Based Compensation
Non-cash, stock-based compensation	$ 64,954	$ 14,262	$ 36,261
Subscriber-related
Stock-Based Compensation
Non-cash, stock-based compensation	7,419	883	1,412
General and administrative
Stock-Based Compensation
Non-cash, stock-based compensation	57,535	$ 13,379	$ 34,849
Non-Performance Based Stock Awards
Share-based expenses
Unrecognized compensation expense	$ 44,000
Share-based compensation additional disclosures
Weighted average period for recognition of compensation cost	3 years 7 months 6 days