CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash Flows from Operating Activities:
Net Income (Loss)	$ 33,074	$ (131,271)
Adjustments to Reconcile Net Income (Loss) to Net Cash Provided by Operating Activities:
Depreciation and Amortization	121,804	126,178
Stock-Based Compensation Expense	7,464	5,141
Deferred Income Taxes	(29,792)	(33,120)
Provision (Benefit) For Doubtful Accounts Receivable	356	(8,841)
Gain on Equity Investment	(14,876)	0
Asset Impairment	44,370	108,216
Gain on Insurance Settlement	0	(30,668)
Gain on Disposal of Assets, Net	(3,140)	(24,563)
Other	4,667	7,537
(Increase) Decrease in Operating Assets -
Accounts Receivable	(21,030)	7,992
Prepaid Expenses and Other	10,078	2,033
Increase (Decrease) in Operating Liabilities -
Accounts Payable	23,165	9,013
Insurance Notes Payable	(21,855)	(17,151)
Other Current Liabilities	20,126	35,821
Other Liabilities	4,992	2,896
Net Cash Provided by Operating Activities	179,403	59,213
Cash Flows from Investing Activities:
Acquisition of Assets, Net of Cash Acquired	(200,957)	(40,000)
Additions of Property and Equipment	(307,135)	(82,150)
Deferred Drydocking Expenditures	(7,519)	(9,814)
Cash Paid for Equity Investment	0	(4,288)
Insurance Proceeds Received	1,430	54,139
Proceeds from Sale of Assets, Net	107,404	49,854
Other	2,214	1,621
Net Cash Used in Investing Activities	(404,563)	(30,638)
Cash Flows from Financing Activities:
Long-term Debt Borrowings	400,000	500,000
Long-term Debt Repayments	0	(452,909)
Redemption of 3.375% Convertible Senior Notes	(61,274)	(27,606)
Common Stock Issuance	0	96,696
Payment of Debt Issuance Costs	(8,208)	(7,717)
Other	1,288	160
Net Cash Provided by Financing Activities	331,806	108,624
Net Increase in Cash and Cash Equivalents	106,646	137,199
Cash and Cash Equivalents at Beginning of Period	259,193	134,351
Cash and Cash Equivalents at End of Period	$ 365,839	$ 271,550