Consolidated Statements Of Stockholders' Equity (USD $) In Thousands	Class A Common Stock [Member] Common Stock [Member]	Class B Common Stock [Member] Common Stock [Member]	Capital In Excess Of Par Value [Member]	Accumulated Distributions In Excess Of Earnings [Member]	Total
Balance at Dec. 31, 2012	$ 117	$ 45	$ 245,403	$ (79,850)	$ 165,715
Net income				8,396	8,396
Deferred compensation			(797)		(797)
Issuance of shares of common stock for deferred compensation			797		797
Amortization of deferred compensation			267		267
Distributions				(3,234)	(3,234)
Balance at Mar. 31, 2013	$ 117	$ 45	$ 245,670	$ (74,688)	$ 171,144