Consolidated Statements of Operations (Parenthetical) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Direct operating expenses $ 103,686 $ 92,256 $ 88,590
Non-cash stock-based compensation 4,771 2,651 2,343
Depreciation and amortization 14,953 16,426 18,653
Interest expense 24,631 35,407 37,650
Direct Operating Expenses [Member]
      
Non-cash stock-based compensation 1,070 146 229
Depreciation and amortization 11,176 12,332 13,258
Selling, General and Administrative Expenses [Member]
      
Non-cash stock-based compensation 0 767 812
Depreciation and amortization 2,923 2,858 3,141
Corporate Expenses [Member]
      
Non-cash stock-based compensation 3,701 1,738 1,302
Depreciation and amortization 854 1,236 2,254
Related Parties [Member]
      
Direct operating expenses 10,322 10,599 8,373
Depreciation and amortization 2,320 2,633 3,617
Interest expense $ 0 $ 0 $ 30