Description Of Business And Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2021
Description Of Business And Segment Reporting [Abstract]
Summary Of Results Of Operations For Principal Business Segments	Quarter Ended Nine Months Ended September 30, September 30,(Dollars in thousands) 2021 2020 2021 2020Revenue: Cinema exhibition $ 28,751 $ 7,339 $ 79,580 $ 54,866 Real estate 3,177 3,023 9,948 9,928 Inter-segment elimination (125) (171) (386) (1,953) $ 31,803 $ 10,191 $ 89,142 $ 62,841Segment operating income (loss): Cinema exhibition $ (5,057) $ (13,410) $ (20,680) $ (33,318) Real estate (1,485) (844) (3,907) (1,464) $ (6,542) $ (14,254) $ (24,587) $ (34,782)
Reconciliation To Net Income Attributable To Common Shareholders	Quarter Ended Nine Months Ended September 30, September 30,(Dollars in thousands) 2021 2020 2021 2020Segment operating income (loss) $ (6,542) $ (14,254) $ (24,587) $ (34,782)Unallocated corporate expense Depreciation and amortization expense (300) (215) (917) (634) General and administrative expense (4,109) (2,906) (11,957) (11,194) Interest expense, net (3,068) (2,379) (10,437) (6,176)Equity earnings of unconsolidated joint ventures (75) (97) 158 (292)Gain (loss) on sale of assets 2,559 (1) 92,345 (1)Other income (expense) 440 10 2,236 (186)Income (loss) before income tax expense $ (11,095) $ (19,842) $ 46,841 $ (53,265)