CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
REVENUES	$ 408,883	$ 351,018	$ 803,121	$ 684,495
COSTS AND EXPENSES:
Direct operating costs (excluding items below)	216,044	188,114	425,513	370,253
Depreciation and amortization	66,531	61,330	131,147	120,296
Selling, general and administrative	33,263	25,098	62,694	48,154
Gain on disposals of property and equipment	(19,222)	(2,063)	(18,914)	(2,119)
Material charges and other operating expenses	0	8,126	0	12,697
Total costs and expenses	296,616	280,605	600,440	549,281
INCOME (LOSS) FROM OPERATIONS	112,267	70,413	202,681	135,214
OTHER INCOME (EXPENSE):
Interest expense, net of interest capitalized	(17,685)	(12,993)	(36,266)	(24,250)
Loss on extinguishment of debt	0	(11,767)	0	(11,767)
Interest income	368	146	727	260
Other - net	(443)	(122)	(1,237)	1,215
Total other income (expense) - net	(17,760)	(24,736)	(36,776)	(34,542)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	94,507	45,677	165,905	100,672
Provision (benefit) for income taxes	11,663	(5,171)	14,927	(5,675)
NET INCOME FROM CONTINUING OPERATIONS	82,844	50,848	150,978	106,347
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX	0	(1,413)	0	(7,395)
NET INCOME	$ 82,844	$ 49,435	$ 150,978	$ 98,952
INCOME (LOSS) PER SHARE - BASIC:
Income from continuing operations (in dollars per share)	$ 0.67	$ 0.41	$ 1.22	$ 0.87
Discontinued operations (in dollars per share)	$ 0.00	$ (0.01)	$ 0.00	$ (0.06)
Net income (in dollars per share)	$ 0.67	$ 0.40	$ 1.22	$ 0.81
INCOME (LOSS) PER SHARE - DILUTED:
Income from continuing operations (in dollars per share)	$ 0.67	$ 0.41	$ 1.21	$ 0.86
Discontinued operations (in dollars per share)	$ 0.00	$ (0.01)	$ 0.00	$ (0.06)
Net income (in dollars per share)	$ 0.67	$ 0.40	$ 1.21	$ 0.80