CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash Flows from Operating Activities:
Net income (loss)	$ 30,278	$ (349,626)
Adjustments to reconcile net income (loss) to net cash from operating activities:
Goodwill and intangible asset impairment		376,574
Depreciation and amortization	27,566	32,106
Stock-based compensation expense	4,624	5,074
Excess income tax benefit from stock-based compensation	(358)
Deferred income taxes	500	(42,421)
Adjustment of interest rate swap to fair value		264
Loss on sale of investments		2,699
(Gain) loss on sale of property and equipment	(180)	530
Other long-term liabilities	8,449	(4,006)
Other non-cash items	(111)	253
Changes in other components of working capital	(109,338)	(53,314)
NET CASH USED IN OPERATING ACTIVITIES	(38,570)	(31,867)
Cash Flows from Investing Activities:
Acquisition of property and equipment	(28,127)	(21,788)
Proceeds from sale of property and equipment	2,359	9,614
Investments in available-for-sale securities		(535)
Proceeds from sale of available-for-sale securities		16,553
Change in restricted cash	(8,302)	(3,247)
NET CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES	(34,070)	597
Cash Flows from Financing Activities:
Proceeds from debt	421,550	306,582
Repayment of debt	(374,987)	(290,917)
Business acquisition related payments		(2,932)
Excess income tax benefit from stock-based compensation	358
Issuance of common stock and effect of cashless exercise	341	(307)
Debt issuance costs		(10)
NET CASH PROVIDED BY FINANCING ACTIVITIES	47,262	12,416
Net Decrease in Cash and Cash Equivalents	(25,378)	(18,854)
Cash and Cash Equivalents at Beginning of Year	168,056	204,240
Cash and Cash Equivalents at End of Period	142,678	185,386
Supplemental Disclosure of Cash Paid For:
Interest	21,678	19,220
Income taxes	12,692	15,793
Supplemental Disclosure of Non-cash Transactions:
Property and equipment acquired through financing arrangements	205	2,050
Grant date fair value of common stock issued for services	$ 3,657	$ 5,075