CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
REVENUES	$ 382,808	$ 353,910	$ 1,185,929	$ 1,038,405
COSTS AND EXPENSES:
Direct operating costs (excluding items below)	211,827	188,152	637,340	558,405
Depreciation and amortization	69,274	63,027	200,421	183,323
Selling, general and administrative	33,263	25,780	95,957	73,934
Gain on disposals of property and equipment	(65)	(559)	(18,979)	(2,678)
Material charges and other operating expenses	0	18,174	0	30,871
Total costs and expenses	314,299	294,574	914,739	843,855
INCOME (LOSS) FROM OPERATIONS	68,509	59,336	271,190	194,550
OTHER INCOME (EXPENSE):
Interest expense, net of interest capitalized	(17,111)	(13,690)	(53,377)	(37,940)
Loss on extinguishment of debt	0	(10,456)	0	(22,223)
Interest income	417	263	1,144	523
Other - net	(368)	(505)	(1,605)	710
Total other income (expense) - net	(17,062)	(24,388)	(53,838)	(58,930)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	51,447	34,948	217,352	135,620
(Benefit) provision for income taxes	(453)	8,533	14,474	2,858
NET INCOME FROM CONTINUING OPERATIONS	51,900	26,415	202,878	132,762
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, NET OF TAX	0	1,164	0	(6,231)
NET INCOME	$ 51,900	$ 27,579	$ 202,878	$ 126,531
INCOME (LOSS) PER SHARE - BASIC:
Income from continuing operations (in dollars per share)	$ 0.42	$ 0.21	$ 1.64	$ 1.08
Discontinued operations (in dollars per share)	$ 0.00	$ 0.01	$ 0.00	$ (0.05)
Net income (in dollars per share)	$ 0.42	$ 0.22	$ 1.64	$ 1.03
INCOME (LOSS) PER SHARE - DILUTED:
Income from continuing operations (in dollars per share)	$ 0.42	$ 0.21	$ 1.63	$ 1.07
Discontinued operations (in dollars per share)	$ 0.00	$ 0.01	$ 0.00	$ (0.05)
Net income (in dollars per share)	$ 0.42	$ 0.22	$ 1.63	$ 1.02