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Lease Arrangements - Lessee Operating Lease Balance Sheet Amounts and Lines (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Leases [Line Items] |  |
Operating Leases | $ 15,388 |
Property, plant and equipment [Member] |  |
Leases [Line Items] |  |
Right-of-Use Assets | 12,833 | $ 13,911
Accrued and other liabilities [Member] |  |
Leases [Line Items] |  |
Operating Leases | $ 15,388 | $ 16,634

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- Definition Leases line item. + References No definition available. + Details
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Namespace Prefix: | imax_
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Balance Type: | na
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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Namespace Prefix: | us-gaap_
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Period Type: | instant

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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |