Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current Assets:
Cash and Cash Equivalents	$ 134,351	$ 136,666
Restricted Cash	9,633	11,128
Accounts Receivable, Net of Allowance for Doubtful Accounts of $11,460 and $29,798 as of December 31, 2011 and 2010, Respectively	153,688	143,796
Prepaids	16,352	17,142
Current Deferred Tax Asset	15,543	8,488
Other	20,435	11,794
Total current assets	350,002	329,014
Property and Equipment, Net	1,591,791	1,634,542
Equity Investment	34,735	0
Other Assets, Net	30,176	31,753
Total assets	2,006,704	1,995,309
Current Liabilities:
Short-term Debt and Current Portion of Long-term Debt	22,130	4,924
Accounts Payable	49,370	52,279
Accrued Liabilities	70,421	59,861
Interest Payable	9,899	6,974
Insurance Notes Payable	5,218	5,984
Other Current Liabilities	18,366	16,716
Total current liabilities	175,404	146,738
Long-term Debt, Net of Current Portion	818,146	853,166
Other Liabilities	21,098	6,716
Deferred Income Taxes	83,503	135,557
Commitments and Contingencies
Stockholders' Equity:
Common Stock, $0.01 Par Value; 200,000 Shares Authorized; 139,798 and 116,336 Shares Issued, Respectively; 137,899 and 114,784 Shares Outstanding, Respectively	1,398	1,163
Capital in Excess of Par Value	2,057,824	1,924,659
Treasury Stock, at Cost, 1,899 Shares and 1,552 Shares, Respectively	(52,184)	(50,333)
Retained Deficit	(1,098,485)	(1,022,357)
Total stockholders' equity	908,553	853,132
Total liabilities and stockholders' equity	$ 2,006,704	$ 1,995,309