Employees Pension and Postretirement Benefits - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Jun. 30, 2022	Dec. 31, 2020
Deferred Compensation Plan [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Deferred compensation plan description			The Company maintained a nonqualified deferred compensation benefit plan (the "Retirement Plan") covering the former CEO of IMAX Entertainment and Senior Executive Vice President of the Company. Under the terms of the Retirement Plan, the benefits were due to vest in full if the executive incurred a separation from service from the Company (as defined therein).
Deferred Compensation Plan [Member] | Accrued and Other Liabilities [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Benefit obligation recorded	$ 3,900,000		$ 3,900,000		$ 3,800,000
Deferred Compensation Plan [Member] | Prepaid Expenses [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Company-owned life insurance	3,400,000		3,400,000		3,300,000
Richard L. Gelfond [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Benefit payable			20,300,000
SERP Benefits [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Benefit Obligation	20,176,000		20,176,000		20,056,000		$ 20,116,000
Interest costs			120,000		72,000
Companies contribution and expenses during the remainder of 2021						$ 0
SERP Benefits [Member] | Maximum [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Interest costs	100,000	$ 100,000	100,000	$ 100,000
Expected interest costs in the remainder of the year	100,000		$ 100,000
Defined Contribution Plan [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Defined contribution pension plans for employees			The Company also maintains defined contribution plans for its employees, including its executive officers. The Company makes contributions to these plans on behalf of employees in an amount up to 5% of their base salary subject to certain prescribed maximums.
Maximum percentage of base salary contributed to Defined Contribution Pension Plan by Company			5.00%
Canadian Plan [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Contribution and recorded expense	400,000	300,000	$ 900,000	800,000
Us Internal Revenue Code [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Contribution and recorded expense	100,000	$ 100,000	500,000	$ 400,000
Postretirement Benefits Executives [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Benefit Obligation	700,000		700,000		700,000
Postretirement Benefits Executives [Member] | Maximum [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Maximum amount of Postretirement benefit recorded expense	100,000		100,000
Postretirement Benefits Canadian Employees [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Benefit Obligation	1,500,000		1,500,000		1,700,000
Maximum amount of Postretirement benefit recorded expense			$ 100,000
Postretirement Benefits Canadian Employees [Member] | Maximum [Member]
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]
Maximum amount of Postretirement benefit recorded expense	$ 100,000				$ 100,000