Capital Stock and Reserves - Stock-based Compensation by Plan Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	$ 5,404	$ 6,109	$ 19,093	$ 18,211
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	120	253	449	808
Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	3,516	3,900	11,405	11,524
Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	1,864	1,183	5,317	3,169
IMAX China Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	17	41	75	143
IMAX China Long Term Incentive Plan Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	122	600	1,712	2,217
IMAX China Long Term Incentive Plan Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	$ (235)	$ 132	$ 135	$ 350