CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
REVENUES	$ 425,724	$ 435,305
EXPENSES:
Operating	307,530	315,534
General and administrative	31,232	21,840
Depreciation and amortization	27,630	28,387
Costs and Expenses, Total	366,392	365,761
OPERATING INCOME	59,332	69,544
OTHER EXPENSES:
Interest expense, net	12,566	16,890
Expenses associated with debt refinancing transactions	225	1,541
Other expense	101	12
Total non-operating expense (income)	12,892	18,443
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	46,440	51,101
Income tax (expense) benefit	134,652	(19,059)
INCOME FROM CONTINUING OPERATIONS	181,092	32,042
Loss from discontinued operations, net of taxes		(362)
NET INCOME	$ 181,092	$ 31,680
BASIC EARNINGS PER SHARE:
Income from continuing operations	$ 1.81	$ 0.32
Loss from discontinued operations, net of taxes
Net income	$ 1.81	$ 0.32
DILUTED EARNINGS PER SHARE:
Income from continuing operations	$ 1.78	$ 0.32
Loss from discontinued operations, net of taxes
Net income	$ 1.78	$ 0.32
DIVIDENDS DECLARED PER SHARE:	$ 0.53