Notes Payable (Narrative) (Details)	3 Months Ended				3 Months Ended		12 Months Ended	3 Months Ended		12 Months Ended		0 Months Ended		3 Months Ended	12 Months Ended	0 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended
	Mar. 31, 2014 USD ($)	Mar. 31, 2013 USD ($)	Dec. 31, 2013 USD ($)	Mar. 31, 2014 Sutton Hill Properties [Member]	Mar. 31, 2014 Australian NAB Corporate Term Loan [Member] USD ($)	Mar. 31, 2014 Australian NAB Corporate Term Loan [Member] AUD	Dec. 31, 2013 Australian NAB Corporate Term Loan [Member] USD ($)	Mar. 31, 2014 US Bank Of America Revolver [Member] USD ($)	Mar. 31, 2013 US Bank Of America Revolver [Member] USD ($)	Dec. 31, 2013 US Bank Of America Revolver [Member] USD ($)	Mar. 25, 2013 US Bank Of America Revolver [Member] USD ($)	Apr. 01, 2013 US Liberty Theaters Term Loan [Member] USD ($)	Jun. 28, 2013 US Bank Of America Line Of Credit [Member] USD ($)	Mar. 31, 2014 US Bank Of America Line Of Credit [Member] USD ($)	Dec. 31, 2013 US Bank Of America Line Of Credit [Member]	Mar. 20, 2013 US Cinema 1, 2, 3 Term Loan [Member] USD ($)	Mar. 31, 2014 US Cinema 1, 2, 3 Term Loan [Member] USD ($)	Dec. 31, 2013 US Cinema 1, 2, 3 Term Loan [Member] USD ($)	Mar. 31, 2014 US Minetta And Orpheum Theatres Loan [Member] USD ($)	Dec. 31, 2013 US Minetta And Orpheum Theatres Loan [Member] USD ($)	Jun. 18, 2013 US Sutton Hill Capital Note – Related Party [Member] USD ($)	Mar. 31, 2014 US Sutton Hill Capital Note – Related Party [Member]	Jun. 18, 2013 US Sutton Hill Capital Note – Related Party [Member] Sutton Hill Properties [Member] USD ($)	Jun. 18, 2013 US Sutton Hill Capital Note – Related Party [Member] Reading International Inc. [Member] USD ($)
Debt Instrument [Line Items]
Fixed interest rate					7.90%	7.90%		5.20%											1.15%
Swap contract rate					5.50%	5.50%		1.20%
Interest rate margin					2.40%	2.40%		4.00%
Interest rate					5.10%	5.10%	5.09%	2.65%		2.67%				3.15%	3.17%		5.16%	5.21%	2.90%	2.91%		8.25%
Line of credit facility, previous maximum borrowing capacity											$ 30,000,000
Line of credit facility, maximum borrowing capacity											35,000,000			5,000,000
Note payable	168,912,000		168,460,000		56,809,000	61,200,000	56,699,000	30,625,000		31,500,000							15,000,000	15,000,000	7,500,000	7,500,000
Additional amount borrowed		5,000,000							5,000,000
Repayment of loan	936,000	689,000										2,300,000
Amount of debt paid off													2,000,000								9,000,000		2,250,000	6,750,000
Loan extension period																1 year
Renewal fee																$ 150,000
Maturity date					Jun. 30, 2014	Jun. 30, 2014		Oct. 31, 2017						Oct. 31, 2017			Jun. 27, 2014		Jun. 01, 2018
Spread on variable interest rate																			2.75%
Interest rate cap																			4.00%
Ownership percentage by parent				75.00%