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Borrowings (Bank Of America Line Of Credit) (Narrative) (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Mar. 06, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |
Contractual facility |  | $ 248,948 | $ 300,449
Bank Of America Line Of Credit [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit facility, previous borrowing capacity | $ 5,000 |  |
Maturity date |  |  | Mar. 06, 2023
Contractual facility |  |  | $ 5,000
London Interbank Offered Rate (LIBOR) [Member] | Bank Of America Line Of Credit [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Spread over LIBOR | 1.00% |  |

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- Definition Debt Instrument Contractual Facility Borrowing Capacity + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Line Of Credit Facility, Previous Borrowing Capacity + References No definition available. + Details
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Namespace Prefix: | rdi_
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Balance Type: | credit
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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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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- Definition Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + 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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