Business Segments And Geographic Area Information (Results Of Operations For Each Of Our Principal Business Segments) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 254,430	$ 244,979	$ 229,322
Operating expense	201,674	192,405	180,844
Depreciation and amortization	15,595	16,286	14,848
General and administrative expense	3,316	3,386	3,923
Impairment expense	1,463	369	2,239
Segment operating income	32,382	32,533	27,468
Cinema Exhibition [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	234,703	225,849	211,073
Operating expense	198,040	189,647	178,261
Depreciation and amortization	11,154	11,842	10,559
General and administrative expense	2,598	2,740	2,880
Segment operating income	22,911	21,620	19,373
Real Estate [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	27,256	26,562	24,715
Operating expense	11,163	10,190	9,049
Depreciation and amortization	4,441	4,444	4,289
General and administrative expense	718	646	1,043
Impairment expense	1,463	369	2,239
Segment operating income	9,471	10,913	8,095
Intersegment Eliminations [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	(7,529)	(7,432)	(6,466)
Operating expense	$ (7,529)	$ (7,432)	$ (6,466)