Summary Of Significant Accounting Policies (Narrative) (Details)	1 Months Ended	12 Months Ended															12 Months Ended				12 Months Ended											12 Months Ended							12 Months Ended
	May 31, 2012 USD ($)	Dec. 31, 2012 USD ($) segment	Dec. 31, 2012 AUD	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 Australia Country Cinemas [Member]	Dec. 31, 2012 Angelika Center [Member]	Dec. 31, 2012 Shadow View Land And Farming LLC [Member] acre	Dec. 31, 2012 205-209 East 57th Street Associates, LLC [Member]	Dec. 31, 2012 Mt. Gravatt [Member]	Dec. 31, 2012 Rialto Distribution [Member] USD ($)	Dec. 31, 2012 Rialto Distribution [Member] NZD	Dec. 31, 2011 Rialto Distribution [Member] USD ($)	Dec. 31, 2011 Rialto Distribution [Member] NZD	Oct. 01, 2005 Rialto Distribution [Member]	Dec. 31, 2012 Rialto Cinemas [Member]	Dec. 31, 2012 US Liberty Theaters Term Loans [Member] USD ($)	Dec. 31, 2012 Sovereign Bank Loan [Member] USD ($)	Dec. 31, 2012 US GE Capital Term Loan [Member]	Oct. 31, 2012 US GE Capital Term Loan [Member] USD ($)	Dec. 31, 2012 US Bank Of America Revolver [Member] USD ($)	Dec. 31, 2012 US Bank Of America Line Of Credit [Member] USD ($)	Oct. 31, 2012 US Bank Of America Line Of Credit [Member] USD ($)	Jun. 24, 2011 BOSI Australia Corporate Credit Facility [Member] USD ($)	Jun. 24, 2011 BOSI Australia Corporate Credit Facility [Member] AUD	Dec. 31, 2010 BOSI Australia Corporate Credit Facility [Member] USD ($)	Dec. 31, 2010 BOSI Australia Corporate Credit Facility [Member] AUD	Dec. 31, 2012 NAB Australian Corporate Credit Facility [Member] USD ($)	Dec. 31, 2012 NAB Australian Corporate Credit Facility [Member] AUD	Jun. 24, 2011 NAB Australian Corporate Credit Facility [Member] USD ($)	Jun. 24, 2011 NAB Australian Corporate Credit Facility [Member] AUD	Dec. 31, 2012 New Zealand Corporate Credit Facility [Member] USD ($)	Dec. 31, 2012 New Zealand Corporate Credit Facility [Member] NZD	Dec. 31, 2012 Australia [Member] USD ($)	Dec. 31, 2011 Australia [Member]	Dec. 31, 2012 United States [Member] USD ($)	Dec. 31, 2012 New Zealand [Member] USD ($)	Dec. 31, 2011 New Zealand [Member]	Dec. 31, 2010 Consolidated Entertainment [Member] USD ($)	Dec. 31, 2012 Consolidated Entertainment [Member] USD ($)	Dec. 31, 2011 Consolidated Entertainment [Member] USD ($)	Dec. 31, 2012 Class A [Member] USD ($)	Dec. 31, 2011 Class A [Member] USD ($)	Dec. 31, 2010 Class A [Member] USD ($)	Dec. 31, 2009 Class A [Member] USD ($)	Dec. 31, 2012 Class B [Member] USD ($)	Dec. 31, 2011 Class B [Member] USD ($)	Dec. 31, 2010 Class B [Member] USD ($)	Dec. 31, 2009 Class B [Member] USD ($)	Dec. 31, 2012 Minimum [Member] US Bank Of America Revolver [Member]	Dec. 31, 2012 Maximum [Member] US Bank Of America Revolver [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage in consolidated entity						75.00%	50.00%	50.00%
Area of property								202
Ownership percentage in equity method investment									25.00%	33.30%	33.30%	33.30%			33.30%	50.00%
Maturity date																	Apr. 01, 2013	Jun. 27, 2013	Oct. 31, 2012		Oct. 31, 2017	Oct. 31, 2017										Mar. 31, 2015	Mar. 31, 2015
Line of credit facility, amount outstanding											$ 703,000	850,000	$ 663,000	850,000			$ 6,400,000							$ 105,800,000	100,500,000	$ 101,700,000	100,500,000
Line of credit facility, maximum borrowing capacity											1,700,000	2,000,000	1,600,000	2,000,000			7,100,000	15,000,000		27,700,000	30,000,000	5,000,000		115,800,000	110,000,000					110,500,000	105,000,000	32,800,000	40,000,000	100,000,000
Line of credit facility, term																	5 years	1 year														3 years	3 years
Extension period																		1 year
Extension fee																		1.00%
Spread on variable interest rate																		5.00%				3.50%										2.00%	2.00%																	2.50%	3.00%
Line of credit facility, previous borrowing capacity																							3,000,000
Cash position		46,500,000																																17,500,000		22,700,000	6,300,000
Time deposits		8,000,000
Unrestricted cash		7,500,000
Line of credit facility, funds available																					3,000,000	3,000,000						10,400,000	10,000,000			9,900,000	12,000,000
Time deposits purchased	8,000,000
Time deposit interest rate		48.00%	48.00%
Cumulative unrealized gain		9,000
Net unrealized losses		2,000		32,000	478,000
Restricted cash		2,465,000		2,379,000
Number of segments		2	2
Estimated property development costs		17,700,000	17,100,000
Property development costs		8,600,000	8,300,000
Impairment losses		1,463,000		369,000	2,239,000
Purchase price adjustment																																							(16,900,000)
Goodwill		22,898,000		22,277,000	21,535,000																																			1,700,000	1,700,000
Advertising expense		3,800,000		3,800,000	3,800,000
Gains/(losses) on the settlement of litigation		$ (194,000)		$ 0	$ (808,000)
Currency exchange rates																																		1.0393	1.0251		0.8267	0.7805
Options issued																																										672,350	622,350	622,350	589,750	185,100	185,100	185,100	150,000
Options issued, weighted average exercise price																																										$ 6.24	$ 5.65	$ 5.65	$ 5.51	$ 9.90	$ 9.90	$ 9.90	$ 10.24