Related Parties And Transactions (Details) (USD $)	0 Months Ended	12 Months Ended
	Jun. 28, 2007	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2005
Related Party Transaction [Line Items]
Property asset		$ 202,778,000	$ 203,780,000
Current capital lease liability		5,855,000
Deemed distribution				877,000
Contributions from noncontrolling stockholders		3,350,000	233,000	225,000
Sutton Hill Capital, LLC [Member]
Related Party Transaction [Line Items]
Related party expense		590,000	590,000	547,000
Lease Term		10 years
Lease expiration date		Jun. 30, 2020
Purchase option		5,900,000
Property asset		4,700,000
Current capital lease liability		5,900,000
Deemed distribution		877,000
Special purpose entity purchase option, percentage					25.00%
Payment to acquire interest in special purpose entity	3,000,000
Sutton Hill Capital's Interest In Sutton Hill Properties [Member]
Related Party Transaction [Line Items]
Ownership percentage in equity method investment	25.00%
OBI Management [Member]
Related Party Transaction [Line Items]
Related party expense		390,000	398,000	416,000
Historical related party fees paid as percentage of cash flow received from certain theaters		21.00%
Related party fees paid as percentage of cash flow received from certain theaters		19.70%	19.40%	24.20%
Period of notice required for termination of management agreement		6 months
James Cotter And Michael Forman [Member]
Related Party Transaction [Line Items]
Ownership percentage in live theater play investment		5.00%
Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Contributions from noncontrolling stockholders		2,500,000
Bonus contributed to acquire land		255,000
Noncontrolling interests		50.00%
Minimum [Member]
Related Party Transaction [Line Items]
Lease Term		1 year
Minimum [Member] | Sutton Hill Capital, LLC [Member]
Related Party Transaction [Line Items]
Purchase option		$ 100,000