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Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2022
Apr. 30, 2023
Jun. 30, 2022
Document Type 10-K/A    
Document Annual Report true    
Document Transition Report false    
Entity File Number 1-8625    
Document Period End Date Dec. 31, 2022    
Document Fiscal Year Focus 2022    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Entity Registrant Name Reading International, Inc.    
Entity Incorporation, State or Country Code NV    
Entity Tax Identification Number 95-3885184    
Entity Address, Address Line One 189 Second Avenue    
Entity Address, Address Line Two Suite 2S    
Entity Address, City or Town New York    
Entity Address, State or Province NY    
Entity Address, Postal Zip Code 10003    
City Area Code 213    
Local Phone Number 235-2240    
Entity Central Index Key 0000716634    
Entity Filer Category Non-accelerated Filer    
ICFR Auditor Attestation Flag false    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Interactive Data Current Yes    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 69,983,442
Documents Incorporated by Reference Documents Incorporated by Reference

None.

    
Auditor Firm ID 248    
Auditor Location Los Angeles, CA    
Auditor Name Grant Thornton LLP    
Amendment Flag true    
Amendment Description EXPLANATORY NOTE This Amendment No. 1 on Form 10-K/A (this "Form 10-K/A") amends our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, originally filed with the U.S. Securities and Exchange Commission (the "SEC") on March 31, 2023 (the "2022 Form 10-K"). We are filing this Form 10-K/A to amend the cover page of the 2022 Form 10-K and to include the information required by Items 10 through 14 of Part III that were not included in the 2022 Form 10-K, as we will not file a definitive proxy statement containing such information within 120 days after the end of the fiscal year ended December 31, 2022, the end of the fiscal year covered by our 2022 Form 10-K. Our board of directors has not yet set a date for the Company's 2023 Annual Meeting of Stockholders (the "Annual Meeting"). This Form 10-K/A amends the cover page of the 2022 Form 10-K to (i) check the box that the Company is a smaller reporting company, and (ii) to correct the aggregate market value of voting and non-voting common equity held by non-affiliates as of June 30, 2022. This Form 10-K/A also amends and restates in their entirety Items 10 through 14 of Part III and the Exhibit Index (including the filing of new certifications as required by Section 302 of the Sarbanes-Oxley Act of 2002, as amended (the "Sarbanes-Oxley Act") in accordance with Rule 13a-14(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act")) of the 2022 Form 10-K. Except as otherwise expressly noted above, this Form 10-K/A does not amend any other information set forth in the 2022 Form 10-K. This Form 10-K/A continues to speak as of the date of the 2022 Form 10-K and, except where expressly noted, we have not updated disclosures contained herein or therein to reflect any events that occurred at a date subsequent to the date of the 2022 Form 10-K. Accordingly, this Form 10-K/A should be read in conjunction with the 2022 Form 10-K and our other filings with the SEC. Because no financial statements have been included in this Form 10-K/A and this Form 10-K/A does not contain or amend any disclosure with respect to Item 307 or Item 308 of Regulation S-K, paragraphs 3, 4 and 5 of the certifications required by Section 302 of the Sarbanes-Oxley Act have been omitted. Unless the context requires otherwise, all references to the "Company," "Reading," “we,” “our” or “us” means Reading International, Inc., a Nevada corporation, and its consolidated subsidiaries.    
Class A [Member]      
Title of 12(b) Security Class A Nonvoting Common Stock, $0.01 Par Value    
Trading Symbol RDI    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   20,534,457  
Class B [Member]      
Title of 12(b) Security Class B Voting Common Stock, $0.01 Par Value    
Trading Symbol RDIB    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   1,680,590