Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net income (loss)	$ 30,032	$ 11,177	$ (33,261)
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization	164,717	132,832	120,811
Allowance for doubtful accounts	76	787	521
(Gain) loss on dispositions of property and equipment	(1,199)	151	(1,629)
Stock-based compensation expense	7,319	6,705	6,675
Amortization of debt issuance costs, discount and premium	2,985	3,302	2,609
Impairment of investments	0	0	3,331
Impairment of equipment	1,131	484	0
Deferred income taxes	13,303	8,098	(13,224)
Change in other long-term assets	(3,865)	2,828	(1,373)
Change in other long-term liabilities	(1,173)	(623)	3,223
Changes in current assets and liabilities:
Receivables	(12,807)	(46,802)	(9,576)
Inventory	(927)	(2,161)	(3,487)
Prepaid expenses and other current assets	(1,266)	(1,965)	(2,598)
Accounts payable	2,431	9,331	7,458
Deferred revenues	(86)	297	3,261
Accrued expenses	(1,305)	20,438	15,610
Net cash provided by operating activities	199,366	144,879	98,351
Cash flows from investing activities:
Acquisition of production services businesses	0	(6,502)
Purchases of property and equipment	(364,324)	(210,066)	(131,003)
Proceeds from sale of property and equipment	3,093	5,550	2,331
Proceeds from sale of auction rate securities	0	12,569	0
Proceeds from insurance recoveries	0	0	531
Net cash used in investing activities	(361,231)	(307,484)	(129,481)
Cash flows from financing activities:
Debt repayments	(874)	(113,158)	(256,856)
Proceeds from issuance of debt	100,000	250,750	274,375
Debt issuance costs	(58)	(7,285)	(4,865)
Proceeds from exercise of options	693	2,884	238
Proceeds from common stock, net of offering costs of $5,707	0	94,343	0
Purchase of treasury stock	(360)	(743)	(130)
Net cash provided by financing activities	99,401	226,791	12,762
Net (decrease) increase in cash and cash equivalents	(62,464)	64,186	(18,368)
Beginning cash and cash equivalents	86,197	22,011	40,379
Ending cash and cash equivalents	23,733	86,197	22,011
Supplementary disclosure:
Interest paid	44,317	26,955	17,529
Income taxes paid	$ 731	$ 952	$ (39,778)