CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]
REVENUES	$ 353,910	$ 234,698	$ 1,038,405	$ 664,161
COSTS AND EXPENSES:
Direct operating costs (excluding items below)	188,152	129,767	558,405	345,558
Depreciation and amortization	63,027	50,306	183,323	129,267
Selling, general and administrative	25,780	22,629	73,934	65,172
Gain on disposals of property and equipment	(559)	14	(2,678)	(1,408)
Material charges and other operating expenses	18,174	20	30,871	6,120
Total costs and expenses	294,574	202,736	843,855	544,709
INCOME FROM OPERATIONS	59,336	31,962	194,550	119,452
OTHER INCOME (EXPENSE):
Interest expense, net of interest capitalized	(13,690)	(4,233)	(37,940)	(17,001)
Loss on extinguishment of debt	(10,456)	0	(22,223)	0
Interest income	263	277	523	338
Other - net	(505)	(458)	710	(1,177)
Total other income (expense) - net	(24,388)	(4,414)	(58,930)	(17,840)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	34,948	27,548	135,620	101,612
Provision (benefit) for income taxes	8,533	(3,876)	2,858	(1,010)
NET INCOME FROM CONTINUING OPERATIONS	26,415	31,424	132,762	102,622
DISCONTINUED OPERATIONS
Income (loss) from discontinued operations, net of tax	1,164	(1,213)	(6,231)	1,047
Gain on sale of discontinued operations, net of tax	0	163,598	0	588,071
Discontinued operations, net of tax	1,164	162,385	(6,231)	589,118
NET INCOME	$ 27,579	$ 193,809	$ 126,531	$ 691,740
INCOME (LOSS) PER SHARE - BASIC:
Income from continuing operations (in dollars per share)	$ 0.21	$ 0.25	$ 1.08	$ 0.82
Discontinued operations (in dollars per share)	$ 0.01	$ 1.30	$ (0.05)	$ 4.69
Net income (in dollars per share)	$ 0.22	$ 1.55	$ 1.03	$ 5.51
INCOME (LOSS) PER SHARE - DILUTED:
Income from continuing operations (in dollars per share)	$ 0.21	$ 0.25	$ 1.07	$ 0.81
Discontinued operations (in dollars per share)	$ 0.01	$ 1.28	$ (0.05)	$ 4.64
Net income (in dollars per share)	$ 0.22	$ 1.53	$ 1.02	$ 5.45