Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Income Tax Contingency [Line Items]
Income tax expense (benefit)	$ 6,555	$ 2,348	$ 14,901	$ 8,091
Deferred tax asset, valuation allowance	65,200		65,200		$ 62,900
Additional deferred tax asset, valuation allowance	700	$ 4,300	2,400
Deferred tax liabilities	13,300		13,300		14,900
Deferred income tax asset after valuation allowance	12,000		12,000		$ 9,900
Reporting Entities [Member]
Income Tax Contingency [Line Items]
Additional deferred tax asset, valuation allowance	$ 700		3,700
IMAX China
Income Tax Contingency [Line Items]
Additional deferred tax asset, valuation allowance			$ 1,300