Business Segments (Results Of Operations For Each Of Our Principal Business Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 segment	Jun. 30, 2012
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 69,642	$ 62,947	$ 129,209	$ 125,378
Operating expense	53,825	49,047	102,529	98,124
Depreciation and amortization	3,540	3,820	7,419	7,785
General and administrative expense	1,015	928	1,905	1,809
Segment operating income	11,262	9,152	17,356	17,660
Number of reportable business segments			2
Cinema Exhibition [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	64,659	57,988	119,429	115,390
Operating expense	53,008	48,347	100,956	96,563
Depreciation and amortization	2,525	2,733	5,285	5,563
General and administrative expense	801	782	1,571	1,484
Segment operating income	8,325	6,126	11,617	11,780
Real Estate [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	6,896	6,841	13,606	13,753
Operating expense	2,730	2,582	5,399	5,326
Depreciation and amortization	1,015	1,087	2,134	2,222
General and administrative expense	214	146	334	325
Segment operating income	2,937	3,026	5,739	5,880
Intersegment Eliminations [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	(1,913)	(1,882)	(3,826)	(3,765)
Operating expense	$ (1,913)	$ (1,882)	$ (3,826)	$ (3,765)