Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 32,315	$ 36,130
Trade receivables, net of allowance for doubtful accounts of $3,985 and $4,396 (including related parties of $7,064 and $4,916)	46,361	48,030
Prepaid expenses and other current assets (including related parties of $274 and $274)	4,960	4,245
Total current assets	83,636	88,405
Property and equipment, net	60,042	61,435
Intangible assets subject to amortization, net (included related parties of $20,299 and $20,880)	21,714	22,349
Intangible assets not subject to amortization	220,701	220,701
Goodwill	36,647	36,647
Other assets	8,072	8,514
Total assets	430,812	438,051
Current liabilities
Current maturities of long-term debt	200	150
Advances payable, related parties	118	118
Accounts payable and accrued expenses (including related parties of $3,756 and $3,576)	29,855	39,158
Total current liabilities	30,173	39,426
Long-term debt, less current maturities (net of bond discount of $2,848 and $2,982)	340,748	340,664
Other long-term liabilities	7,180	7,359
Deferred income taxes	47,043	45,201
Total liabilities	425,144	432,650
Commitments and contingencies (note 4)
Stockholders' equity (deficit)
Additional paid-in capital	932,037	930,814
Accumulated deficit	(926,378)	(925,421)
Total stockholders' equity (deficit)	5,668	5,401
Total liabilities and stockholders' equity (deficit)	430,812	438,051
Class A Common Stock
Stockholders' equity (deficit)
Common stock	6	5
Class B Common Stock
Stockholders' equity (deficit)
Common stock	2	2
Class U Common stock
Stockholders' equity (deficit)
Common stock	$ 1	$ 1