Basis Of Presentation (Details) (USD $)	3 Months Ended				3 Months Ended		0 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2013 US Liberty Theaters Term Loan [Member]	Mar. 31, 2013 Bank Of America Revolver [Member]	Apr. 01, 2013 Subsequent Event [Member] US Liberty Theaters Term Loan [Member]
Basis Of Presentation [Line Items]
Credit facility maturity date					Apr. 01, 2013
Credit facility outstanding amount					$ 6,400,000
Additional amount borrowed						5,000,000
Repayment of loan	689,000	4,329,000					2,300,000
Forbearance maturity date					Jun. 01, 2013
Forbearance fee							20,000
Tax settlement debt payments, monthly	290,000
Tax settlement debt payments, yearly	3,500,000
Cash and cash equivalents	50,778,000	29,097,000	38,531,000	31,597,000
Investments in marketable securities	55,000		55,000
Cumulative unrealized gain (loss) on investments	8,000
Unrealized gain (loss) on marketable securities	(1,000)	(12,000)
Sale of marketable securities		3,000,000
Marketable securities realized gain		$ 111,000