Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Mar. 12, 2018
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Entity Registrant Name	READING INTERNATIONAL INC
Trading Symbol	rdi
Entity Central Index Key	0000716634
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Public Float	$ 287,968,855
Class A [Member]
Entity Common Stock, Shares Outstanding		21,497,716
Class B [Member]
Entity Common Stock, Shares Outstanding		1,680,590