Consolidated Statements Of Operations (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Direct operating expenses	$ 88,590	$ 84,802	$ 83,902
Non-cash stock-based compensation	2,343	2,970	4,034
Depreciation and amortization	18,653	19,229	21,033
Interest expense	37,650	24,429	27,948
Direct Operating Expenses [Member]
Non-cash stock-based compensation	229	454	854
Depreciation and amortization	13,258	13,545	15,454
Selling, General And Administrative Expenses [Member]
Non-cash stock-based compensation	812	897	1,142
Depreciation and amortization	3,141	3,557	4,328
Corporate Expenses [Member]
Non-cash stock-based compensation	1,302	1,619	2,038
Depreciation and amortization	2,254	2,127	1,251
Related Parties [Member]
Direct operating expenses	8,373	10,857	8,105
Depreciation and amortization	3,617	3,211	2,320
Interest expense	$ 30	$ 83	$ 118