Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Components of the Company's deferred tax assets (liabilities)
Net operating loss carryforwards	$ 14,694	$ 12,505
Alternative minimum tax credit carryforwards	779	779
Tax basis of goodwill and intangible property over book	1,608
Tax basis of property, equipment and other assets over book basis	61,810	48,907
Deferred income	10,418	10,421
Deferred compensation	2,938	1,342
Deferred rent	5,585	5,848
Compensation accruals	2,613	2,925
Basis difference in investee	2,463	2,236
Total deferred tax asset	102,908	84,963
Valuation allowance		(84,963)
Net deferred tax asset	$ 102,908