Summary of Significant Accounting Policies - Film costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Individual Monetization:
Feature films in production	$ 1,707	$ 0
Film, Monetized on Its Own, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of revenue, excluding depreciation and amortization	Cost of revenue, excluding depreciation and amortization	Cost of revenue, excluding depreciation and amortization
Amortized film costs	$ 3,200	$ 8,400	$ 7,100
Decrease in film costs	700	1,500
Production tax credit receivable	$ 3,500	$ 3,000