Consolidated Statements of Operations (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Direct operating expenses	$ 92,256	$ 88,590	$ 84,802
Non-cash stock-based compensation	2,651	2,343	2,970
Depreciation and amortization	16,426	18,653	19,229
Interest expense	35,407	37,650	24,429
Direct Operating Expenses
Non-cash stock-based compensation	146	229	454
Depreciation and amortization	12,332	13,258	13,545
Selling, General and Administrative Expenses
Non-cash stock-based compensation	767	812	897
Depreciation and amortization	2,858	3,141	3,557
Corporate Expenses
Non-cash stock-based compensation	1,738	1,302	1,619
Depreciation and amortization	1,236	2,254	2,127
Related Parties
Direct operating expenses	10,599	8,373	10,857
Depreciation and amortization	2,633	3,617	3,211
Interest expense	$ 0	$ 30	$ 83