Debt Instrument Floor Interest Rate

No definition available.

Name:	rdi_DebtInstrumentFloorInterestRate
Namespace Prefix:	rdi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates type of variable interest rate on debt instrument.

+ References

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Period Type:	duration

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	srt_OwnershipAxis=rdi_SuttonHillPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=rdi_UnitedStateCinemasOneTwoThreeTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

Borrowings (Cinema 1, 2, 3 Term Loan) (Narrative) (Details) - USD ($) $ in Millions		9 Months Ended	12 Months Ended
	Nov. 13, 2025	Sep. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]		us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember
Sutton Hill Properties, LLC [Member]
Debt Instrument [Line Items]
Ownership percentage by parent		75.00%
US Cinema 1, 2, 3 Term Loan [Member]
Debt Instrument [Line Items]
Maturity date		Oct. 01, 2025	Apr. 01, 2025
Debt, face amount		$ 20.4
US Cinema 1, 2, 3 Term Loan [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Maturity date	Oct. 01, 2026
Valley National Loan [Member]
Debt Instrument [Line Items]
Interest rate		5.00%
Debt Instrument Floor Interest Rate		7.50%