Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows From Operating Activities:
Net loss	$ (12,095)	$ (56,214)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	84,362	81,832
Amortization of debt issuance costs and discounts	5,168	7,441
Loss on sale or disposal of assets	1,093	4,235
Loss on early extinguishment of debt and write-off of discounts and deferred financing costs		32,429
Deferred income tax benefit	(8,438)	(32,460)
Equity-based compensation	1,335	2,222
Changes in assets and liabilities:
Accounts receivable	(7,501)	(22,011)
Inventories	(8,099)	(9,563)
Prepaid expenses and other current assets	(2,354)	(1,914)
Accounts payable	24,697	26,070
Accrued salaries, wages and benefits	(4,970)	(8,498)
Deferred revenue	53,799	69,855
Other accrued expenses	4,418	4,179
Other assets and liabilities	2,094	128
Net cash provided by operating activities	133,509	97,731
Cash Flows From Investing Activities:
Capital expenditures	(93,847)	(88,025)
Change in restricted cash	(229)	(232)
Net cash used in investing activities	(94,076)	(88,257)
Cash Flows From Financing Activities:
Repayment of long-term debt	(7,025)	(182,229)
Proceeds from draw on revolving credit facility	40,000	35,000
Repayment of revolving credit facility	(40,000)	(35,000)
Purchase of treasury stock	(50,706)
Dividends paid to stockholders	(35,407)	(184)
Payment of tax withholdings on equity-based compensation through shares withheld	(130)
Redemption premium payment		(15,400)
Proceeds from the issuance of debt		1,455
Proceeds from issuance of common stock in initial public offering, net of underwriter commissions		253,800
Debt issuance costs		(13,961)
Offering costs		(4,694)
Net cash (used in) provided by financing activities	(93,268)	38,787
Change in Cash and Cash Equivalents	(53,835)	48,261
Cash and Cash Equivalents-Beginning of period	116,841	45,675
Cash and Cash Equivalents-End of period	63,006	93,936
Supplemental Disclosures of Noncash Investing and Financing Activities
Capital expenditures in accounts payable	22,215	31,414
Dividends declared, but unpaid	$ 18,590	$ 18,072