Non-Controlling Interests - Additional Information (Details) $ in Thousands	3 Months Ended		12 Months Ended	87 Months Ended
	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2014 USD ($) Film	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Non-controlling Interests
Non-controlling interest	$ 82,215			$ 82,215	$ 78,519
Less: Net (income) loss attributable to non-controlling interests	4,340	$ (10,057)
Investment in film assets	$ 2,213	3,064
IMAX China Noncontrolling Interest
Non-controlling Interests
Minority Interest Ownership Percentage By Company	69.83%			69.83%
IMAX China
Non-controlling Interests
Non-controlling interest	$ 82,200			$ 82,200
Less: Net (income) loss attributable to non-controlling interests	4,300	$ (9,600)
Other Noncontrolling Interest [Member]
Non-controlling Interests
Less: Net (income) loss attributable to non-controlling interests	$ (9)
Non-controlling interest description	The Company’s Original Film Fund was established in 2014 to co-finance a portfolio of 10 original large-format films. The initial investment in the Original Film Fund was committed by a third party in the amount of $25.0 million, with the possibility of contributing additional funds. The Company has contributed $9.0 million to the Original Film Fund since 2014 and has reached its maximum contribution.
Number Of Expected Original Films | Film			10
Investment in film assets				22,300
Other Noncontrolling Interest [Member] | Third Party [Member]
Non-controlling Interests
Expected contribution to film fund by third party			$ 25,000
Other Noncontrolling Interest [Member] | IMAX [Member]
Non-controlling Interests
Film fund contributions paid				$ 9,000