Borrowings (Summary Of Borrowings) (Details) - USD ($) $ in Thousands											1 Months Ended	2 Months Ended	12 Months Ended
		Sep. 18, 2019	Aug. 08, 2019	Mar. 05, 2019	Oct. 12, 2018	Oct. 11, 2018	Feb. 05, 2018	Dec. 13, 2016	Aug. 31, 2016	Mar. 03, 2016	Oct. 31, 2016	Apr. 30, 2018	Dec. 31, 2019		Dec. 31, 2018
Debt Instrument [Line Items]
Contractual Facility													$ 283,138		$ 252,929
Balance Gross													209,218		167,043
Balance Net													207,012	[1]	162,740	[2]
Deferred financing costs, net													$ 2,200		$ 4,300
Trust Preferred Securities [Member]
Debt Instrument [Line Items]
Maturity date													Apr. 30, 2027		Apr. 30, 2027
Contractual Facility						$ 1,600							$ 27,913		$ 27,913
Balance Gross													27,913		27,913
Balance Net													$ 26,311	[1]	$ 26,061	[2]
Stated Interest Rate													5.94%		6.52%
Effective interest rate													5.94%		6.52%
Bank Of America Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date			Sep. 01, 2020	May 01, 2020									Mar. 06, 2023		May 01, 2020
Contractual Facility										$ 55,000			$ 55,000		$ 55,000
Balance Gross													33,500		25,000
Balance Net													$ 33,445	[1]	$ 25,000	[2]
Stated Interest Rate													4.80%		5.02%
Effective interest rate													4.80%		5.02%
Bank Of America Line Of Credit [Member]
Debt Instrument [Line Items]
Maturity date			Sep. 01, 2020								Oct. 31, 2019		Mar. 06, 2023		Oct. 31, 2019
Contractual Facility											$ 5,000		$ 5,000		$ 5,000
Stated Interest Rate													4.80%		5.48%
Effective interest rate													4.80%		5.48%
Banc Of America Digital Projector Loan [Member]
Debt Instrument [Line Items]
Maturity date															Dec. 28, 2019
Contractual Facility							$ 4,600					$ 4,900			$ 2,604
Balance Gross															2,604
Balance Net	[2]														$ 2,604
Stated Interest Rate															5.00%
Effective interest rate															5.00%
Cinemas 1, 2, 3 Term Loan [Member]
Debt Instrument [Line Items]
Maturity date													Apr. 01, 2022		Sep. 01, 2019
Contractual Facility									$ 20,000				$ 18,658		$ 19,086
Balance Gross													18,658		19,086
Balance Net													$ 18,532	[1]	$ 18,838	[2]
Stated Interest Rate													3.25%		3.25%
Effective interest rate													3.25%		3.25%
Minetta And Orpheum Theatres Loan [Member]
Debt Instrument [Line Items]
Maturity date													Nov. 01, 2023	[3]	Nov. 01, 2023
Contractual Facility					$ 7,500								$ 8,000	[3]	$ 8,000
Balance Gross													8,000	[3]	8,000
Balance Net													$ 7,887	[1],[3]	$ 7,857	[2]
Stated Interest Rate													3.74%	[3]	4.88%
Effective interest rate													5.15%	[3]	4.88%
U.S. Corporate Office Term Loan [Member]
Debt Instrument [Line Items]
Maturity date													Jan. 01, 2027		Jan. 01, 2027
Contractual Facility								$ 8,400					$ 9,260		$ 9,495
Balance Gross													9,260		9,495
Balance Net													$ 9,153	[1]	$ 9,373	[2]
Effective interest rate													4.64%		4.61%
Purchase Money Promissory Note [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 18, 2024											Sep. 18, 2024
Contractual Facility													$ 3,363
Balance Gross													3,363
Balance Net	[1]												$ 3,363
Stated Interest Rate													5.00%
Effective interest rate													5.00%
Union Square Construction Financing [Member]
Debt Instrument [Line Items]
Maturity date													Dec. 29, 2020		Dec. 29, 2019
Contractual Facility													$ 50,000		$ 57,500
Balance Gross													36,048		27,182
Balance Net													$ 36,035	[1]	$ 25,280	[2]
Stated Interest Rate													6.02%
Effective interest rate													6.02%		8.35%
NAB Corporate Term Loan [Member]
Debt Instrument [Line Items]
Maturity date	[4]												Dec. 31, 2023
Contractual Facility	[4]												$ 84,360
Balance Gross	[4]												65,731
Balance Net	[1],[4]												$ 65,541
Stated Interest Rate	[4]												1.77%
Effective interest rate	[4]												1.77%
NAB Corporate Loan Facility [Member]
Debt Instrument [Line Items]
Maturity date	[5]														Dec. 31, 2023
Contractual Facility	[5]														$ 46,856
Balance Gross	[5]														37,696
Balance Net	[2],[5]														$ 37,660
Stated Interest Rate	[5]														3.05%
Effective interest rate	[5]														3.05%
Westpac Bank Corporate Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date													Dec. 31, 2023	[4]	Dec. 31, 2023	[5]
Contractual Facility													$ 21,584	[4]	$ 21,475	[5]
Balance Gross													6,745	[4]	10,067	[5]
Balance Net													$ 6,745	[1],[4]	$ 10,067	[2],[5]
Stated Interest Rate													3.05%	[4]	3.80%	[5]
Effective interest rate													3.05%	[4]	3.80%	[5]
Minetta and Orpheum Loan [Member]
Debt Instrument [Line Items]
Effective interest rate													5.15%
Minimum [Member] | U.S. Corporate Office Term Loan [Member]
Debt Instrument [Line Items]
Stated Interest Rate													4.44%		4.64%
Minimum [Member] | Union Square Construction Financing [Member]
Debt Instrument [Line Items]
Stated Interest Rate													6.02%		6.76%
Maximum [Member] | U.S. Corporate Office Term Loan [Member]
Debt Instrument [Line Items]
Stated Interest Rate													4.64%		4.44%
Maximum [Member] | Union Square Construction Financing [Member]
Debt Instrument [Line Items]
Stated Interest Rate															12.51%

[1] Net of deferred financing costs amounting to $2.2 million.

[2] Net of deferred financing costs amounting to $4.3 million.

[3] The interest rate derivative associated with the Minetta & Orpheum loan provides for an effective fixed rate of 5.15%.

[4] The contractual facilities and outstanding balances of the FC-denominated borrowings were translated into U.S. dollars based on exchange rates as of December 31, 2019.

[5] The contractual facilities and outstanding balances of the FC-denominated borrowings were translated into U.S. dollar based on exchange rates as of December 31, 2018.