Lease Arrangements And Financing Receivables - Additional Information (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($) Lease	Jan. 01, 2019 USD ($)
Leases [Line Items]
Lessor, sales-type lease description	Several of the Company’s leases are classified as sales-type leases for transactions related to the lease of IMAX theater systems. Certain arrangements that are legal sales are also classified as sales-type leases as certain clauses within the arrangements limit transfer of title or provide the Company with conditional rights to the system.
Sales-type lease, option to purchase asset description	the Company’s leases generally do not contain an automatic transfer of title at the end of the lease term
Lessee, operating lease description	The Company mainly leases office and warehouse storage space and office equipment is generally purchased outright. Leases with an initial term of less than 12 months are not recorded on the balance sheet; the Company recognizes lease expense for these leases on a straight-line basis over the lease term.
Lessee, operating lease, existence of option to extend term	true
Lessee, operating lease, existence of option to extend description	The Company assumed that it was reasonably certain that the renewal options on its warehouse leases would be exercised based on previous history and knowledge, current understanding of future business needs and level of investment in leasehold improvements, among other considerations.
Lessee, operating lease, assumptions for discount rate	The incremental borrowing rate used in the calculation of the lease liability is based on the location of each leased property.
Leases include options to purchase leased property | Lease	0
Lessee, operating lease, existence of residual value	false
Lessee, operating lease, sublease options	The Company rents or subleases certain office space to third parties, which have a remaining term of less than 12 months and are not expected to be renewed.
Operating Lease liability	$ 18,093	$ 20,000
ASC Topic 842 Leases [Member] | As Adjusted [Member]
Leases [Line Items]
Operating Lease liability		20,000
Unamortized lease inducements and other accruals		$ (2,500)
Minimum [Member]
Leases [Line Items]
Sales-type lease, lease term	10 years
Non-cancellable term of joint revenue sharing arrangements	10 years
Lessee, operating lease, renewal term	1 year
Maximum [Member]
Leases [Line Items]
Sales-type lease, lease term	20 years
Non-cancellable term of joint revenue sharing arrangements	or longer
Lessee, operating lease, renewal term	5 years