Business Segments (Results Of Operations For Each Of Our Principal Business Segments) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segment	Jun. 30, 2014 USD ($)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 72,803	$ 69,922	$ 133,386	$ 127,975
Operating expense	53,517	52,192	100,798	98,957
Depreciation and amortization	3,462	3,774	7,134	7,488
General and administrative expense	1,038	1,461	2,040	2,535
Segment operating income	14,786	12,495	$ 23,414	18,995
Number of reportable business segments | segment			2
Intersegment Eliminations [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	(1,691)	(1,714)	$ (3,409)	(3,664)
Operating expense	(1,691)	(1,714)	(3,409)	(3,664)
Cinema [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	68,957	65,854	125,855	119,278
Operating expense	52,913	51,647	99,772	97,387
Depreciation and amortization	2,637	2,818	5,464	5,613
General and administrative expense	839	1,202	1,713	2,101
Segment operating income	12,568	10,187	18,906	14,177
Real Estate [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	5,537	5,782	10,940	12,361
Operating expense	2,295	2,259	4,435	5,234
Depreciation and amortization	825	956	1,670	1,875
General and administrative expense	199	259	327	434
Segment operating income	$ 2,218	$ 2,308	$ 4,508	$ 4,818