Segmented Information - Inter-Segment Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Revenues		$ 86,390	$ 82,108	$ 271,385	$ 265,437
Gross margins
Gross margins		47,120	42,191	151,813	153,287
IMAX DMR [Member]
Revenues
Revenues		26,665	22,372	93,908	85,586
Gross margins
Gross margins	[1]	17,866	14,461	61,602	57,523
Joint Revenue Sharing Arrangements – Contingent Rent [Member]
Revenues
Revenues	[2]	16,546	14,327	59,704	56,919
Gross margins
Gross margins	[1]	9,514	8,081	40,437	39,441
IMAX systems – Contingent Rent [Member]
Revenues
Revenues	[2]	32	0	189	0
Gross margins
Gross margins		32	0	189	0
Network Business Total [Member]
Revenues
Revenues	[2]	43,243	36,699	153,801	142,505
Gross margins
Gross margins		27,412	22,542	102,228	96,964
IMAX Systems [Member]
Revenues
Revenues	[2]	21,003	23,398	50,800	59,527
Gross margins
Gross margins	[1]	11,630	13,064	26,874	37,487
Joint Revenue Sharing Arrangements – Fixed Fees [Member]
Revenues
Revenues	[2]	1,438	2,798	6,525	3,821
Gross margins
Gross margins	[1]	136	529	1,301	776
Theater System Maintenance [Member]
Revenues
Revenues	[2]	13,657	12,415	39,815	37,462
Gross margins
Gross margins		6,125	5,996	17,046	17,289
Other Theater [Member]
Revenues
Revenues	[2]	1,560	2,076	5,766	5,707
Gross margins
Gross margins		505	581	1,821	1,099
Theater Network Total [Member]
Revenues
Revenues	[2]	37,658	40,687	102,906	106,517
Gross margins
Gross margins		18,396	20,170	47,042	56,651
New Business [Member]
Revenues
Revenues	[2]	596	1,275	1,908	4,999
Gross margins
Gross margins		541	(298)	1,441	139
Film Post-production [Member]
Revenues
Revenues	[2]	2,185	2,262	6,458	6,512
Gross margins
Gross margins		810	737	1,576	2,272
Film Distribution [Member]
Revenues
Revenues	[2]	1,343	800	3,333	2,644
Gross margins
Gross margins	[1]	(760)	(477)	(1,093)	(1,952)
Other [Member]
Revenues
Revenues	[2]	1,365	385	2,979	2,260
Gross margins
Gross margins		721	(483)	619	(787)
Others Total [Member]
Revenues
Revenues	[2]	4,893	3,447	12,770	11,416
Gross margins
Gross margins		$ 771	$ (223)	$ 1,102	$ (467)

[1] IMAX DMR segment margins include marketing costs of $4.3 million and $17.7 million for the three and nine months ended September 30, 2019, respectively (2018 — $3.1 million and $13.7 million, respectively). Joint revenue sharing arrangements segment margins include advertising, marketing and commission costs of $0.8 million and $1.1 million for the three and nine months ended September 30, 2019, respectively (2018 — $1.0 million and $2.2 million, respectively). IMAX systems segment margins include marketing and commission costs of $0.6 million and $1.5 million for the three and nine months ended September 30, 2019, respectively (2018 — $0.8 million and $2.0 million, respectively). Film distribution segment margins include marketing expense of $0.1 million and $0.7 million for the three and nine months ended September 30, 2019, respectively (2018 — expense of less than $0.1 million and $2.0 million, respectively).

[2] The Company’s largest customer represented 16.6% and 18.9%, respectively, of total revenues for the three and nine months ended September 30, 2019, respectively (2018 —15.5% and 18.4%, respectively).