Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 58,008	$ 31,260
Trade receivables, net of allowance for doubtful accounts of $3,049 and $3,100 (including related parties of $7,376 and $10,882)	64,802	64,956
Deferred income taxes	5,900	5,900
Prepaid expenses and other current assets (including related parties of $274 and $274)	6,273	5,295
Total current assets	134,983	107,411
Property and equipment, net of accumulated depreciation of $196,797 and $193,532	59,012	56,784
Intangible assets subject to amortization, net of accumulated amortization of $77,349 and $74,697 (including related parties of $14,498 and $16,239)	17,541	20,193
Intangible assets not subject to amortization	220,701	220,701
Goodwill	50,081	50,081
Deferred income taxes	55,319	66,558
Other assets	5,421	6,039
Total assets	543,058	527,767
Current liabilities
Current maturities of long-term debt	3,750	3,750
Advances payable, related parties	118	118
Accounts payable and accrued expenses (including related parties of $3,903 and $3,695)	28,898	32,195
Total current liabilities	32,766	36,063
Long-term debt, less current maturities	333,750	336,563
Other long-term liabilities	15,581	9,583
Total liabilities	$ 382,097	$ 382,209
Commitments and contingencies (note 4)
Stockholders' equity
Additional paid-in capital	$ 910,068	$ 912,161
Accumulated deficit	(744,656)	(764,474)
Accumulated other comprehensive income (loss)	(4,460)	(2,138)
Total stockholders' equity	160,961	145,558
Total liabilities and stockholders' equity	543,058	527,767
Class A common stock
Stockholders' equity
Common stock	6	6
Class B common stock
Stockholders' equity
Common stock	2	2
Class U common stock
Stockholders' equity
Common stock	$ 1	$ 1