Derivative Instruments (Set Forth Terms Of Interest Rate Swap And Cap Derivative Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Notional amount	$ 63,913	$ 63,913
Other assets	10	1
Other current liabilities	4	58
Interest Rate Swap [Member] | US Bank Of America Credit Facility [Member]
Derivative [Line Items]
Notional amount	21,000	21,000
Other current liabilities	4	40
Interest Rate Swap [Member] | Trust Preferred Securities [Member]
Derivative [Line Items]
Notional amount	27,913	27,913
Other assets	10
Other current liabilities		18
Interest Rate Cap [Member] | US Union Square Construction [Member]
Derivative [Line Items]
Notional amount	7,500	7,500
Other assets		1
Interest Rate Cap [Member] | Minetta and Orpheum Theatres Loan [Member]
Derivative [Line Items]
Notional amount	$ 7,500	$ 7,500