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Employees Pension and Postretirement Benefits - Additional Information (Details) - USD ($)
 3 Months Ended
Sep. 19, 2022
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
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
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
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]        
Defined benefit pension plan   The Company has an unfunded defined benefit pension plan, the Supplemental Executive Retirement Plan (the “SERP”), covering its CEO, Richard L.    
Benefit Obligation   $ 17,500,000   17,300,000
Companies contribution and expenses during the remainder of 2023   0    
SERP Benefits [Member] | Maximum [Member]        
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]        
Interest costs   200,000 $ 100,000  
Expected interest costs in the remainder of the year   $ 600,000    
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   $ 300,000 300,000  
Us Internal Revenue Code [Member]        
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]        
Contribution and recorded expense   300,000 300,000  
Postretirement Benefits Executives [Member]        
Pension and Other Postretirement Benefit Expense (Textual) [Abstract]        
Benefit Obligation   500,000   500,000
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   900,000   $ 1,000,000.0
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