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Amortization of lease assets

Operating lease cost

$ 243

^[1]

$ 1,155

531

Interest of lease liabilities

268

Total lease cost

$ 1,042

$ 1,155

[1]	Includes short-term leases and variable lease costs, which are not significant for the three months ended, March 31, 2019.

Lease Arrangements And Financing Receivables (Table 3) (Details) - USD ($)
$ in Thousands

Mar. 31, 2019

Jan. 01, 2019

Operating Lease liability

$ 19,460

$ 19,960

Property, plant and equipment [Member]

Accrued and other liabilities [Member]

Opererating lease asset

16,991

17,462

Operating Lease liability

$ 19,460

$ 19,960

^[1]

[1]	The Company recorded lease liabilities of approximately $20.0 million as at January 1, 2019 upon initial adoption of ASC Topic 842. In addition, unamortized lease inducements of $2.8 million were reclassed from accrued liabilities to offset against the applicable right-of-use asset.

Lease Arrangements And Financing Receivables (Table 4) (Details)	Mar. 31, 2019	Jan. 01, 2019
Lease Cost [Abstract]
Weighted-average remaining lease term (years)	8 years 1 month 6 days	8 years 3 months 18 days
Weighted-average discount rate	5.80%	5.80%

Lease Arrangements And Financing Receivables (Table 5) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating lease maturities of lease liabilities [Abtract]
2019 (nine months remaining)	$ 2,739
2020	3,451
2021	3,047
2022	2,283
2023	2,175
Thereafter	11,310
Total Lease Payments	25,005
Less: interest expense	(5,545)
Present value of lease liabilities	$ 19,460	$ 19,960
2019			$ 3,847
2020			2,790
2021			2,491
2022			1,843
2023			1,759
Thereafter			9,657
Total lease payments			$ 22,387

Inventories (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended
Inventories (Narratives) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Inventories (Textuals) [Abstract]
Finished goods inventory with title passed to customer	$ 2,700		$ 1,900
Write-downs for excess and obsolete inventory	$ 0	$ 0

Inventories (Table 1) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Inventories
Raw materials	$ 29,074	$ 29,705
Work-in-process	4,082	4,733
Finished goods	11,658	10,122
Total	$ 44,814	$ 44,560

Credit Facility and Other Financing Arrangements (Narratives) (Details) $ in Thousands, ¥ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)	Mar. 31, 2018	Mar. 31, 2019 CNY (¥)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 CNY (¥)	Jul. 05, 2018 USD ($)	Jul. 05, 2018 CNY (¥)	Mar. 03, 2015 USD ($)
Working Capital Loan [Member]
Credit Facility and Other Financing Arrangements (Textuals) [Abstract]
Credit Facility Description	On July 5, 2018, IMAX (Shanghai) Multimedia Technology Co., Ltd. (“IMAX Shanghai”), the Company’s majority-owned subsidiary in China, entered into an unsecured revolving facility for up to 200.0 million Renminbi (approximately $30.0 million U.S. Dollars) to fund ongoing working capital requirements.
Current borrowing capacity						$ 30,000	¥ 200.0
Amounts Drawn	$ 0		¥ 0.0	$ 0	¥ 0.0
Remaining Borrowing Capacity	$ 30,000		¥ 200.0	30,000	¥ 200.0
Credit Facility [Member]
Credit Facility and Other Financing Arrangements (Textuals) [Abstract]
Credit Facility Description	On June 28, 2018, the Company entered into a Fifth Amended and Restated Credit Agreement (the “Credit Agreement”) with Wells Fargo Bank, National Association, as agent, and a syndicate of lenders party thereto. The Credit Agreement expands the Company’s revolving borrowing capacity from $200.0 million to $300.0 million, and also contains an uncommitted accordion feature allowing the Company to further expand its borrowing capacity to $440.0 million or greater, depending on the mix of revolving and term loans comprising the incremental facility. The new facility (the new “Credit Facility”) matures on June 28, 2023.
Credit Facility Maturity Date	Jun. 28, 2023
Interest rate description	Loans under the new Credit Facility will bear interest, at the Company’s option, at (i) LIBOR plus a margin ranging from 1.00% to 1.75% per annum; or (ii) the U.S. base rate plus a margin ranging from 0.25% to 1.00% per annum, in each case depending on the Company’s Total Leverage Ratio (as defined in the Credit Agreement).
Line of credit facility covenant terms	The Credit Agreement requires that the Company maintain a Senior Secured Net Leverage Ratio (as defined in the Credit Agreement) of no greater than 3.25:1. In addition, the Credit Agreement contains customary affirmative and negative covenants for a transaction of this type, including covenants that limit indebtedness, liens, capital expenditures, asset sales, investments and restricted payments, in each case subject to negotiated exceptions and baskets. The Credit Agreement also contains representations, warranties and event of default provisions customary for a transaction of this type.
Compliance with covenants	The Company was in compliance with all of its requirements at March 31, 2019.
Amounts Drawn	$ 60,000			40,000
Remaining Borrowing Capacity	240,000			260,000
Letters of credit and advance payment guarantees	$ 0			0
Effective interest rate	3.57%	0.00%
Credit Facility [Member] \| Minimum [Member]
Credit Facility and Other Financing Arrangements (Textuals) [Abstract]
Current borrowing capacity	$ 300,000
Credit Facility [Member] \| Maximum [Member]
Credit Facility and Other Financing Arrangements (Textuals) [Abstract]
Maximum borrowing capacity	$ 440,000
Maximum borrowing capacity	or greater
Wells Fargo Foreign Exchange Facility [Member]
Credit Facility and Other Financing Arrangements (Textuals) [Abstract]
Settlement risk on its foreign currency forward contracts	$ 800
Notional Amount of arrangements entered into	43,885
Bank of Montreal Facility [Member]
Credit Facility and Other Financing Arrangements (Textuals) [Abstract]
Remaining Borrowing Capacity	10,000			10,000
Letters of credit and advance payment guarantees	$ 0			$ 0
Prior Credit Facility [Member]
Credit Facility and Other Financing Arrangements (Textuals) [Abstract]
Current borrowing capacity								$ 200,000

Credit Facility and Other Financing Arrangements (Table 1) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Bank indebtedness [Line Items]
Credit Facility	$ 60,000	$ 40,000
Deferred charges on debt financing	(2,150)	(2,247)
Total bank indebtedness	$ 57,850	$ 37,753

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

Commitments, Contingencies and Guarantees (Narratives) (Details) ¥ in Thousands, $ in Thousands	3 Months Ended		25 Months Ended	51 Months Ended	95 Months Ended
	Mar. 31, 2019 USD ($)	Mar. 31, 2019 CNY (¥)	Dec. 14, 2015 USD ($)	Mar. 27, 2008	Dec. 02, 2011	Dec. 31, 2018 USD ($)	Dec. 31, 2018 CNY (¥)	Dec. 31, 2017 USD ($)
Contingencies And Guarantees Disclosure (Textuals) [Abstract]
Final Award in favor of company				Amount of $11.3 million plus an additional $2,512 each day in interest from October 1, 2007 until the date the award is paid	$30,000 to cover the costs of the application
Underpayment of the freight and insurance portion of the customs duties and taxes related to the customs audit								$ 150
Importation Fee Underpayment threshold for criminal matter \| ¥							¥ 200
Estimated penalties accrued								$ 300
Fine paid relating to Customs Audit	$ 85	¥ 570
Damages sought			$ 10,400
Counterclaim sought			$ 24,000
Percentage of underpayment fined	75.00%	75.00%
Financial Guarantees	$ 0
Product Warranty Accrual	200					$ 200
Indemnification of its directors/officers	$ 0					$ 0
Other Indemnification	0	0

Condensed Consolidated Statements of Operations Supplemental Information (Narratives) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) Film exhibitor Theaters	Mar. 31, 2018 USD ($) Film	Dec. 31, 2018 USD ($)
Selling Expenses
Deferred direct selling costs and direct advertising and marketing included in costs and expenses applicable to revenues-equipment and product sales	$ 500	$ 700
Film exploitation costs, including advertising and marketing included in costs and expenses applicable to revenues-services	4,500	$ 5,300
Commissions recognized as cost and expenses included in costs and expenses applicable to revenues-rentals		less than
Commissions recognized as cost and expenses included in costs and expenses applicable to revenues-rentals	(200)	$ 100
Direct advertising and marketing costs included in costs and expenses applicable to revenues-rentals	200	100
Foreign Exchange
Foreign exchange translation (gain) loss	$ 200	100
Collaborative Arrangements
Total number of exhibitors under joint revenue sharing agreements \| exhibitor	35
Total number of theater systems under joint revenue sharing agreements \| Theaters	1,198
Total number of operating theaters under joint revenue sharing agreement \| Theaters	809
Amounts attributable to transactions arising between the company and its customers under joint revenue sharing arrangements	$ 20,400	$ 17,900
Average percentage of the box-office receipts of the film for recovering digital re-mastering cost	12.50%
IMAX DMR films exhibited in the period \| Film	24	22
Amounts attributable to transactions arising between the company and its customers under IMAX DMR arrangements	$ 27,950	$ 27,051
Number of significant co-produced film arrangement \| Film	2
Number of other co-produced film arrangements \| Film	3
Variable Interest Entity, Consolidated, Carrying Amount, Total Assets	$ 11,783		$ 12,203
Variable Interest Entity, Consolidated, Carrying Amount, Total Liabilities	14,493		$ 11,573
Amounts attributable to transactions between the company and other parties involved in the production of films included in cost and expense	$ 200	200
Number of Co-produced television collaborative arrangements	one
Co-produced television collaborative arrangement revenue	$ 0	400
Co-produced television collaborative arrangement costs and expenses	$ 0	$ 400
Minimum [Member]
Collaborative Arrangements
Non-cancellable term of joint revenue sharing arrangements	10 years
Maximum [Member]
Collaborative Arrangements
Non-cancellable term of joint revenue sharing arrangements	or longer

Condensed Consolidated Statements of Cash Flows Supplemental Information (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Asset Impairment Charges [Abstract]
Property Plant And Equipment Write Downs No Longer in Use	$ 100	$ 500
Theater system components written off in Cost of Sales	$ 100	0
Theater system components written off in revenue	less than
Theater system components written off in Revenue	$ 100	$ 0

Condensed Consolidated Statements of Cash Flows Supplemental Information (Table 1) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Summary of Depreciation and amortization
Film assets	$ 3,695	$ 3,571
Property, plant and equipment
Joint revenue sharing arrangements	5,605	4,840
Other property, plant and equipment	2,936	3,442
Other intangible assets	1,425	1,217
Other assets	433	310
Deferred financing costs	117	141
Depreciation and amortization	$ 14,211	$ 13,521

Condensed Consolidated Statements of Cash Flows Supplemental Information (Table 2) (Details) - USD ($)
$ in Thousands

3 Months Ended

Mar. 31, 2019

Mar. 31, 2018

Write-downs, net of recoveries

Accounts receivable

$ 431

$ 451

Property, plant and equipment

^[1]

421

Joint revenue sharing arrangements

^[1]

180

126

Other intangible assets

Write-downs, net of recoveries

$ 697

$ 1,036

[1]

Condensed Consolidated Statements of Cash Flows Supplemental Information (Table 3) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net accruals related to:
Purchases of property, plant and equipment	$ (401)	$ 364
Investment in joint revenue sharing arrangements	200	(20)
Acquisition of other intangible assets	12	5
Net accruals related to	$ (189)	$ 349

Income Taxes (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Deferred Tax Assets
Change in Company's estimates of the recoverability of its deferred tax assets	$ 0
Deferred income tax asset after valuation allowance	30,500		$ 31,300
Deferred income tax asset before valuation allowance	30,700		31,500
Valuation allowance	200		200
Provision for income taxes	(3,648)	$ (4,453)
Tax provision related to uncertain tax positions	400
Tax provision related to employee stock compensation plans	300
Impact of changes due to U.S. Tax Act			0
Cash held outside of North America	102,700		121,900
Cash held in the PRC	53,500		54,700
Withholding tax estimate on repatriation of funds	$ 9,200		$ 8,400

Income Taxes (Table 1) (Details) - USD ($) $ in Thousands	3 Months Ended
Income Taxes (Table 1) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Unrealized change in cash flow hedging instruments	$ (83)	$ 263
Realized change in cash flow hedging instruments upon settlement	(18)	58
Income tax effect on other comprehensive income	$ (101)	$ 321

Capital Stock (Narratives) (Details) $ / shares in Units, $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2019 USD ($) $ / shares shares	Mar. 31, 2019 USD ($) $ / shares	Mar. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017	May 03, 2018 shares	Jun. 12, 2017 USD ($)
Capital Stock (Textuals) [Abstract]
Share-based compensation costs recorded for the period \| $	$ 4,362		$ 4,828
Common shares purchased in open market by trustee in connection with RSUs	400,000		300,000
Treasury Stock Shares Acquired	191,033			44,579
Value of treasury shares held in trust for future settlement of share based awards \| $	$ 4,207	$ 4,207		$ 916
Weighted average price of common shares purchased in open market by trustee in connection with RSUs \| $ / shares	$ 22.98		$ 20.55
Antidilutive shares issuable upon exercise of stock options and restricted share units	6,647,056		6,409,364
Parent [Member]
Capital Stock (Textuals) [Abstract]
Details of the share repurchase program					In 2017, the Company‘s Board of Directors approved a new $200.0 million share repurchase program for shares of the Company’s common stock. The share repurchase program expires on June 30, 2020. The repurchases may be made either in the open market or through private transactions, subject to market conditions, applicable legal requirements and other relevant factors. The Company has no obligation to repurchase shares and the share repurchase program may be suspended or discontinued by the Company at any time.
Stock Repurchase Program, Authorized Amount \| $							$ 200,000
Stock Repurchase Program Expiration Date	Jun. 30, 2020
Stock Repurchased And Retired During Period, Shares	0		654,224
Stock Acquired, Average Cost per Share \| $ / shares	$ 0		$ 20.46
Non-controlling Interests [Member]
Capital Stock (Textuals) [Abstract]
Details of the share repurchase program				In 2018, IMAX China announced that its shareholders granted its Board of Directors a general mandate authorizing the Board, subject to applicable laws, to repurchase shares of IMAX China in an amount not to exceed 10% of the total number of issued shares of IMAX China as at May 3, 2018 (35,818,112 shares). The share purchase program expires on the date of the 2019 annual general meeting of IMAX China. The repurchases may be made in the open market or through other means permitted by applicable laws. IMAX China has no obligation to repurchase its shares and the share repurchase program may be suspended or discontinued by IMAX China at any time.
Stock Repurchase Program, maximum percentage of shares to be repurchased						10.00%
Stock Repurchase Program, Authorized number of shares						35,818,112
Stock Repurchased And Retired During Period, Shares	709,800
Stock Acquired, Average Cost per Share \| (per share)	$ 2.48	$ 19.47
Employee Stock Option [Member]
Capital Stock (Textuals) [Abstract]
Share-based compensation costs recorded for the period \| $	$ 1,907		$ 1,389
Antidilutive shares issuable upon exercise of stock options and restricted share units	6,007,317		5,819,952
Restricted Share Units [Member]
Capital Stock (Textuals) [Abstract]
Share-based compensation costs recorded for the period \| $	$ 2,110		$ 3,215
Antidilutive shares issuable upon exercise of stock options and restricted share units	639,739		589,412

Capital Stock (Table 1) (Details) - USD ($) $ in Thousands	3 Months Ended
Capital Stock (Table 1) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Stock-Based Compensation [Abstract]
Cost and expenses applicable to revenues	$ 374	$ 96
Selling, general and administrative expenses	3,903	4,417
Research and development	85	334
Exit costs, restructuring charges and associated impairments	0	(19)
Stock-Based Compensation	$ 4,362	$ 4,828

Capital Stock (Table 2) (Details) - USD ($) $ in Thousands	3 Months Ended
Capital Stock (Table 2) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	$ 4,362	$ 4,828
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	1,907	1,389
Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	2,110	3,215
China Long Term Incentive Plan Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	279	183
China Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense by plan type	$ 66	$ 41

Capital Stock (Table 3) (Details) - Employee Stock Option [Member] - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Option activity under the Stock Option Plan and the IMAX LTIP
Options outstanding, beginning of period	5,465,046	5,082,100
Options outstanding, weighted average exercise price per share, beginning of period	$ 27.63	$ 29.31
Granted	1,006,931	878,629
Granted, weighted average exercise price per share	$ 20.66	$ 22.06
Exercised	(31,235)	0
Exercised, weighted average exercise price per share	$ 20.36	$ 0
Forfeited	(79,055)	(45,164)
Forfeited, weighted average exercise price per share	$ 23.71	$ 31.13
Expired	(304,472)	(10,000)
Expired, weighted average exercise price per share	$ 25.94	$ 27.09
Options outstanding, end of period	6,057,215	5,905,565
Options outstanding, weighted average exercise price per share, end of period	$ 26.64	$ 28.22
Options exercisable, end of period	3,886,592	4,133,351
Options exercisable, weighted average exercise price per share, end of period	$ 28.74	$ 29.14

Capital Stock (Table 4) (Details) - Restricted Share Units [Member] - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Resticted Share Units activity under the IMAX LTIP
RSUs outstanding, beginning of period	1,033,871	995,329
RSUs outstanding, weighted average grant date fair value per share, beginning of period	$ 25.70	$ 32.80
Granted	540,535	535,362
Granted, weighted average grant date fair value per share	$ 22.61	$ 20.85
Vested and settled	(228,445)	(257,888)
Vested and settled, weighted average grant date fair value per share	$ 27.46	$ 32.76
Forfeited	(90,900)	(30,024)
Forfeited, weighted average grant date fair value per share	$ 23.77	$ 31.93
RSUs outstanding, end of period	1,255,061	1,242,779
RSUs outstanding, weighted average grant date fair value per share, end of period	$ 24.18	$ 27.58

Capital Stock (Table 5) (Details) - USD ($) $ in Thousands	3 Months Ended
Capital Stock (Table 5) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Net income (loss) applicable to common shareholders	$ 8,265	$ 8,505
Weighted average number of common shares:
Issued and outstanding, beginning of period	61,290,683		61,433,589	64,695,550
Weighted average number of shares repurchased, net of shares issued, during the period	(56,773)	(140,769)
Weighted average number of shares used in computing basic income per share	61,376,816	64,554,781
Assumed exercise of stock options and RSUs, net of shares assumed repurchased	182,605	64,528
Weighted average number of shares used in computing diluted income per share	61,559,421	64,619,309

Revenue from Contracts with Customers (Narratives) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Revenue from Contracts with Customers [Abstract]
Revenue Remaining Performance Obligation	$ 14.7	$ 21.9
Variable consideration adjustment, modifcation of existing arrangement	$ 1.4

Segmented Information (Narratives) (Details) $ in Millions	3 Months Ended
Segmented Information (Narratives) (Details) $ in Millions	Mar. 31, 2019 USD ($) Segments	Mar. 31, 2018 USD ($)
Segment Reporting (Textuals) [Abstract]
Number of Primary Groups \| Segments	4
Description of products and services from which each reportable segment derives its revenues	The Company’s reportable segments are organized under four primary groups identified by nature of product sold or service provided: (1) Network Business, representing variable revenue generated by box office results and which includes the reportable segment of IMAX DMR and contingent rent from the joint revenue sharing arrangements and IMAX systems segments. Effective January 1, 2018, the Company no longer includes hybrid joint revenue sharing arrangements, which take the form of a sale, in the joint revenue sharing arrangement reportable segment. These arrangements are now reflected under the IMAX systems segment of Theater Business; (2) Theater Business, representing revenue generated by the sale and installation of theater systems and maintenance services, primarily related to the IMAX Systems and Theater System Maintenance reportable segments, and also includes hybrid (fixed and contingent) revenues and upfront installation costs from sales arrangements previously reported in the joint revenue sharing arrangements segment and after-market sales of projection system parts and 3D glasses from the other segment; (3) New Business, which includes content licensing and distribution fees associated with the Company’s original content investments, virtual reality initiatives, and other business initiatives that are in the development and/or start-up phase, and (4) Other; which includes the film post-production and distribution segments, certain IMAX theaters that the Company owns and operates, camera rentals and other miscellaneous items.
Description of the basis of accounting for transactions between reportable segments	Refer to Item 2 of the Company’s Form 10-Q for additional information regarding the four primary groups mentioned above.
Percentage of total revenues represented by largest customer	18.90%	17.20%
Marketing and commission costs	$ 0.5	$ 0.7
Disclosure on Geographic Areas, Description of Revenue from External Customers	No single country in the Rest of the World, Western Europe, Latin America and Asia (excluding Greater China) classifications comprises more than 10% of the total revenue.
IMAX DMR [Member]
Segment Reporting (Textuals) [Abstract]
Marketing costs (recovery)	$ 3.9	4.1
Joint revenue sharing arrangements [Member]
Segment Reporting (Textuals) [Abstract]
Advertising, marketing and commission costs (recovery)	0.1	0.2
IMAX systems [Member]
Segment Reporting (Textuals) [Abstract]
Advertising, marketing and commission costs (recovery)	0.5	0.7
Film distribution [Member]
Segment Reporting (Textuals) [Abstract]
Marketing costs (recovery)	$ 0.6	$ 1.2

Segmented Information (Table 1) (Details) - USD ($)
$ in Thousands

3 Months Ended

Mar. 31, 2019

Mar. 31, 2018

Revenues

$ 80,198

$ 84,984

Network Business Total [Member]

45,140

50,692

Revenues

^[1]

45,833

44,912

31,596

31,522

IMAX DMR [Member]

Revenues

27,950

27,051

^[1]

Joint revenue sharing arrangements - contingent rent [Member]

^[2]

19,775

18,782

Revenues

^[1]

17,857

17,861

IMAX systems - contingent rent [Member]

^[2]

11,795

12,740

Revenues

^[1]

Theater Business Total [Member]

Revenues

^[1]

30,304

34,957

13,217

20,452

IMAX Systems [Member]

Revenues

^[1]

13,188

20,868

Joint revenue sharing arrangements - fixed fees [Member]

^[2]

7,166

14,292

Revenues

^[1]

2,539

Theater system maintenance [Member]

^[2]

295

Revenues

^[1]

12,951

12,712

5,281

6,205

Other theater [Member]

Revenues

^[1]

1,626

1,377

475

(45)

New business [Member]

Revenues

^[1]

834

608

619

(1,469)

Other Total [Member]

Revenues

^[1]

3,227

4,507

Film post-production [Member]

(292)

187

Revenues

^[1]

1,947

3,163

Film distribution [Member]

685

1,685

Revenues

^[1]

715

571

^[2]

(710)

(1,239)

Other [Member]

Revenues

^[1]

565

773

$ (267)

$ (259)

[1]

The Company’s largest customer represented 18.9% of total revenues for the three months ended March 31, 2019 (2018 —17.2%).

[2]

Segmented Information (Table 2) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Geographical Information
Revenues, total	$ 80,198	$ 84,984
Greater China [Member]
Geographical Information
Revenues, total	26,681	28,146
United States [Member]
Geographical Information
Revenues, total	24,293	27,632
Asia (excluding Greater China) [Member]
Geographical Information
Revenues, total	8,790	9,230
Western Europe [Member]
Geographical Information
Revenues, total	8,443	10,262
Latin America [Member]
Geographical Information
Revenues, total	2,653	1,479
Canada [Member]
Geographical Information
Revenues, total	1,872	2,566
Russia & the CIS [Member]
Geographical Information
Revenues, total	1,688	1,990
Rest of the World [Member]
Geographical Information
Revenues, total	$ 5,778	$ 3,679

Employees Pension and Postretirement Benefits (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
SERP Benefits [Member]
Pension and Other Postretirement Benefit Expense (Textuals) [Abstract]
Benefit Obligation	$ 18,118		$ 17,977	$ 19,003
Companies contribution and expenses during the remainder of 2019	0
Expected interest costs in the remainder of the year	$ 400
SERP assumptions	The SERP assumptions are that Mr. Gelfond will receive a lump sum payment six months after retirement at the end of the current term of his employment agreement (December 31, 2019), although Mr. Gelfond has not informed the Company that he intends to retire at that time.
Defined Contribution Plan [Member]
Pension and Other Postretirement Benefit Expense (Textuals) [Abstract]
Description Of Defined Contribution Pension And Other Postretirement Plans	The Company also maintains defined contribution pension 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%
Postretirement Benefits Executives [Member]
Pension and Other Postretirement Benefit Expense (Textuals) [Abstract]
Benefit Obligation	$ 646		639
Maximum amount of Postretirement benefit expensed	less than	less than
Maximum amount of Postretirement benefit expensed	$ 100	$ 100
Postretirement Benefits Canadian Employees [Member]
Pension and Other Postretirement Benefit Expense (Textuals) [Abstract]
Benefit Obligation	$ 1,477		1,487
Maximum amount of Postretirement benefit expensed	less than	less than
Maximum amount of Postretirement benefit expensed	$ 100	$ 100
Canadian Plan [Member]
Pension and Other Postretirement Benefit Expense (Textuals) [Abstract]
Companies contribution and expenses during the remainder of 2019	369	332
Us Internal Revenue Code [Member]
Pension and Other Postretirement Benefit Expense (Textuals) [Abstract]
Companies contribution and expenses during the remainder of 2019	$ 214	193
Deferred Compensation Plan [Member]
Pension and Other Postretirement Benefit Expense (Textuals) [Abstract]
Deferred compensation plan description	The Company maintained a nonqualified deferred compensation benefit plan (the “Retirement Plan”) covering Greg Foster, former CEO of IMAX Entertainment and Senior Executive Vice President of the Company. Under the terms of his Retirement Plan with the Company, the Retirement Plan will vest in full if Mr. Foster incurs a separation of service (as defined therein).
Benefit obligation recorded	$ 3,600		$ 3,600
Compensation expense recognized	$ 0	$ 200

Employees Pension and Postretirement Benefits (Table 1) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Pension Expense
Interest cost	$ 141	$ 105
Amounts Accrued
Interest cost	141	105
Pension Plans, Defined Benefit [Member]
Pension Expense
Interest cost	141		$ 422
Amounts Accrued
Obligation, beginning of period	17,977	$ 19,003	19,003
Interest cost	141		422
Actuarial gain	0		(1,448)
Obligation, end of period and unfunded status	$ 18,118		$ 17,977

Financial Instruments (Narratives) (Details) $ in Thousands	3 Months Ended		12 Months Ended
Financial Instruments (Narratives) (Details) $ in Thousands	Mar. 31, 2019 USD ($) Countries	Mar. 31, 2018 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2018 USD ($)
Financial Instruments (Textuals) [Abstract]
Transfers into/out of Level 3	$ 0
Financing receivables indications of theaters with potential collection concerns	60-89 days
Financing receivables indications of theaters to review and assess	Once a theater’s aging exceeds 90 days, the Company’s policy is to review and assess collectibility on the theater's past due accounts.
Financing receivables indications of theaters with potential impairment	Over 90 days past due is used by the Company as an indicator of potential impairment as invoices up to 90 days outstanding could be considered reasonable due to the time required for dispute resolution or for the provision of further information or supporting documentation to the customer
Number of countries that generate box office \| Countries	81
Foreign Exchange contract settlement date range	Settlement dates throughout 2019 and 2020
Estimated losses to be reclassified to earnings within the next twelve months	$ (900)
Financial Instruments Additional (Textuals) [Abstract]
Convertible loan receivable			$ 1,500
Convertible loan receivable due date			Sep. 26, 2019
Convertible loan effective interest rate			5.00%
Total carrying value of investments in new business ventures	21,200			$ 3,500
Schedule of Equity Investment [Line Items]
Equity Investment, Debt Securities	1,500
Investment classified as equity security - fair value	0			0
Investment in equity securities - cost	$ 15,200
Equity securites restrictions	6 month lock up period
Equity securities percentage ownership	less than 1%
Movements in fair value of financial instruments	$ 2,491	$ 0
Variable Interest Entity, Not Primary Beneficiary [Member] \| Equity Accounted Investment [Member]
Financial Instruments Additional (Textuals) [Abstract]
Carrying value of investments accounted for under the equity method of accounting	0			0
Equity method investment, difference between carrying amount and underlying equity	1,700
Gross revenues of investment new business ventures	200	500
Cost of revenue of investment new business ventures	500	900
Net loss on equity-accounted investments	400	$ 600
Other Debt Securities [Member]
Schedule of Equity Investment [Line Items]
Investment classified as equity security - cost	3,500
Investment classified as equity security - fair value	1,000			1,000
Fixed Income Securities [Member]
Schedule of Equity Investment [Line Items]
Investment classified as equity security - cost	$ 1,000			$ 1,000

Financial Instruments (Table 1) (Details) - USD ($)
$ in Thousands

Mar. 31, 2019

Dec. 31, 2018

Mar. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Cash and cash equivalents

$ 123,084

$ 141,590

$ 145,579

$ 158,725

Net financed sales receivable

117,087

117,990

Net investment in sales-type leases

8,828

9,442

Convertible loan receivable

$ 1,500

Equity investment preferred shares

1,500

Foreign exchange contracts - designated forwards

(815)

(1,202)

Borrowings under the Credit Facility

(60,000)

(40,000)

Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 1 [Member]

Cash and cash equivalents

^[1]

123,084

141,590

Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]

^[2]

17,644

Net financed sales receivable

^[3]

117,087

117,990

Net investment in sales-type leases

^[3]

8,828

9,442

Convertible loan receivable

^[3]

1,500

Borrowings under the Credit Facility

^[2]

2,035

2,022

^[1]

(60,000)

(40,000)

Carrying (Reported) Amount, Fair Value Disclosure [Member] | Designated as Hedging Instrument [Member] | Fair Value, Inputs, Level 2 [Member]

Foreign exchange contracts - designated forwards

^[2]

(815)

(1,202)

Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 1 [Member]

Cash and cash equivalents

^[1]

123,084

141,590

Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]

^[2]

17,644

Net financed sales receivable

^[3]

116,283

117,428

Net investment in sales-type leases

^[3]

8,903

9,529

Convertible loan receivable

^[3]

1,500

Borrowings under the Credit Facility

^[2]

2,035

2,022

^[1]

(60,000)

(40,000)

Estimate of Fair Value, Fair Value Disclosure [Member] | Designated as Hedging Instrument [Member] | Fair Value, Inputs, Level 2 [Member]