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Transactions with DCIP (Parenthetical) (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($)
Digital Cinema Implementation Partners | Other Current Liabilities
Schedule Of Equity Method Investments [Line Items]
Lease termination liability	$ 174

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- Definition

Lease termination liability.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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