CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current Assets:
Cash and Cash Equivalents	$ 197,212	$ 198,406
Accounts Receivable, Net of Allowance for Doubtful Accounts of $357 and $891 as of March 31, 2014 and December 31, 2013, Respectively	224,199	220,139
Prepaids	10,031	20,395
Current Deferred Tax Asset	10,876	10,876
Other	17,708	17,363
Total Current Assets	460,026	467,179
Property and Equipment, Net	1,807,343	1,808,526
Cash Designated for Debt Retirement	79,928	0
Other Assets, Net	28,142	25,743
Total Assets	2,375,439	2,301,448
Current Liabilities:
Accounts Payable	83,031	80,018
Accrued Liabilities	70,919	81,500
Interest Payable	32,142	33,067
Insurance Notes Payable	0	9,568
Other Current Liabilities	29,093	35,735
Total Current Liabilities	215,185	239,888
Long-term Debt	1,290,664	1,210,676
Deferred Income Taxes	14,788	14,452
Other Liabilities	10,230	12,732
Commitments and Contingencies
Stockholders’ Equity:
Common Stock, $0.01 Par Value; 300,000 Shares Authorized; 163,348 and 162,144 Shares Issued, Respectively; 160,640 and 159,761 Shares Outstanding, Respectively	1,633	1,621
Capital in Excess of Par Value	2,173,307	2,170,811
Treasury Stock, at Cost, 2,708 and 2,383 Shares, Respectively	(56,717)	(55,165)
Retained Deficit	(1,273,651)	(1,293,567)
Total Stockholders' Equity	844,572	823,700
Total Liabilities and Stockholders' Equity	$ 2,375,439	$ 2,301,448