Debt (Summary Of Notes Payable) (Details) - USD ($) $ in Thousands			3 Months Ended		12 Months Ended
		Mar. 03, 2016	Mar. 31, 2017		Dec. 31, 2016
Debt Instrument [Line Items]
Contractual facility			$ 268,944		$ 266,134
Balance Gross			153,364		148,535
Balance Net			148,809	[1]	143,614	[2]
Deferred financing costs, net			$ 4,600		$ 4,900
Trust Preferred Securities [Member]
Debt Instrument [Line Items]
Maturity date			Apr. 30, 2027		Apr. 30, 2027
Contractual facility			$ 27,913		$ 27,913
Balance Gross			27,913		27,913
Balance Net			$ 27,393	[1]	$ 27,340	[2]
Stated interest rate			5.04%		4.89%
Effective interest rate			5.20%	[3]	5.20%	[4]
US Bank Of America Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date			Nov. 28, 2019		Nov. 28, 2019
Contractual facility		$ 55,000	$ 55,000		$ 55,000
Balance Gross			39,000		39,950
Balance Net			$ 38,866	[1]	$ 39,759	[2]
Stated interest rate			3.48%		3.27%
Effective interest rate			3.65%	[3]	3.90%	[4]
US Bank Of America Line Of Credit [Member]
Debt Instrument [Line Items]
Maturity date			Oct. 31, 2019		Oct. 31, 2019
Contractual facility			$ 5,000		$ 5,000
Balance Gross			1,000
Balance Net	[1]		$ 1,000
Stated interest rate			3.98%		3.77%
Effective interest rate			3.98%	[3]	3.77%	[4]
US Cinema 1, 2, 3 Term Loan [Member]
Debt Instrument [Line Items]
Maturity date			Sep. 01, 2019		Sep. 01, 2019	[5]
Contractual facility			$ 19,800		$ 19,901	[5]
Balance Gross			19,800		19,901	[5]
Balance Net			$ 19,293	[1]	$ 19,356	[2],[5]
Stated interest rate			3.25%		3.25%	[5]
Effective interest rate			3.25%	[3]	3.25%	[4],[5]
Minetta and Orpheum Theatres Loan [Member]
Debt Instrument [Line Items]
Maturity date			Jun. 01, 2018		Jun. 01, 2018	[5]
Contractual facility			$ 7,500		$ 7,500	[5]
Balance Gross			7,500		7,500	[5]
Balance Net			$ 7,416	[1]	$ 7,398	[2],[5]
Stated interest rate			3.56%		3.38%	[5]
Effective interest rate			3.56%	[3]	3.38%	[4],[5]
U.S. Corporate Office Term Loan [Member]
Debt Instrument [Line Items]
Maturity date			Jan. 01, 2027		Jan. 01, 2027	[5]
Contractual facility			$ 8,333		$ 8,363	[5]
Balance Gross			8,333		8,363	[5]
Balance Net			$ 8,212	[1]	$ 8,239	[2],[5]
Stated interest rate			4.64%		4.64%	[5]
Effective interest rate			4.64%	[3]	4.64%	[4],[5]
US Union Square Construction [Member]
Debt Instrument [Line Items]
Maturity date			Dec. 29, 2019		Dec. 29, 2019	[5]
Contractual facility			$ 57,500		$ 57,500	[5]
Balance Gross			8,000		8,000	[5]
Balance Net			$ 4,942	[1]	$ 4,751	[2],[5]
Stated interest rate			5.24%		4.52%	[5]
Effective interest rate			5.24%	[3]	4.52%	[4],[5]
National Australia Bank ("NAB") Corporate Term Loan [Member]
Debt Instrument [Line Items]
Maturity date			Jun. 28, 2019	[6]	Jun. 30, 2019	[7]
Contractual facility			$ 50,793	[6]	$ 48,080	[7]
Balance Gross			31,316	[6]	28,558	[7]
Balance Net			$ 31,185	[1],[6]	$ 28,421	[2],[7]
Stated interest rate			2.63%	[6]	2.64%	[7]
Effective interest rate			2.63%	[3],[6]	2.64%	[4],[7]
Westpac Bank Corporate Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date			Dec. 31, 2018	[6]	Mar. 31, 2018	[7]
Contractual facility			$ 37,105	[6]	$ 36,877	[7]
Balance Gross			10,502	[6]	8,350	[7]
Balance Net			$ 10,502	[1],[6]	$ 8,350	[2],[7]
Stated interest rate			3.70%	[6]	3.80%	[7]
Effective interest rate			3.70%	[3],[6]	3.80%	[4],[7]

[1] Net of deferred financing costs amounting to $4.6 million.

[2] Net of deferred financing costs amounting to $4.9 million.

[3] Effective interest rate includes the impact of interest rate derivatives hedging the interest rate risk associated with Trust Preferred Securities and Bank of America Credit Facility that were outstanding as of March 31, 2017.

[4] Effective interest rate includes the impact of interest rate derivatives hedging the interest rate risk associated with Trust Preferred Securities and Bank of America Credit Facility that were outstanding as of December 31, 2016.

[5] The loan for our Minetta & Orpheum Theatres was obtained from Santander Bank. The term loan for our Cinema 1,2,3 Theatre was refinanced during the third quarter of 2016 with Valley National Bank. The term loan, which is collateralized by our new U.S Corporate Headquarters office building, was obtained with Citizens Asset Finance, Inc. during the fourth quarter of 2016. In December 2016, we successfully negotiated the construction financing for our Union Square redevelopment project, $8.0 million of which was advanced from the total construction loan limit of $57.5 million.

[6] The contractual facilities and outstanding balances of the FC-denominated borrowings were translated into U.S. dollars based on the applicable exchange rates as of March 31, 2017.

[7] The contractual facilities and outstanding balances of the FC-denominated borrowings were translated into U.S. dollars based on the applicable exchange rates as of December 31, 2016.