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Segment Information
 6 Months Ended
Jun. 30, 2012
Segment Reporting [Abstract]  
Segment Information
SEGMENT INFORMATION
 
The Company principally is engaged in two business segments: the development, acquisition, exploration and production of oil and gas in the continental United States (oil and gas operations) and the purchase, distribution and sale of natural gas in central and north Alabama (natural gas distribution).

 
Three months ended
 
Six months ended
 
June 30,
 
June 30,
(in thousands)
2012
2011
 
2012
2011
Operating revenues
 
 
 
 
 
Oil and gas operations
$
399,468

$
244,090

 
$
623,425

$
460,882

Natural gas distribution
70,887

86,309

 
265,374

355,881

Total
$
470,355

$
330,399

 
$
888,799

$
816,763

Operating income (loss)
 
 
 
 
 
Oil and gas operations
$
216,406

$
105,418

 
$
242,411

$
190,477

Natural gas distribution
4,448

1,163

 
83,008

76,222

Eliminations and corporate expenses
(256
)
(246
)
 
(651
)
(483
)
Total
$
220,598

$
106,335

 
$
324,768

$
266,216

Other income (expense)
 
 
 
 
 
Oil and gas operations
$
(12,004
)
$
(5,822
)
 
$
(22,562
)
$
(11,269
)
Natural gas distribution
(3,784
)
(3,040
)
 
(6,788
)
(5,953
)
Eliminations and other
30

65

 
86

88

Total
$
(15,758
)
$
(8,797
)
 
$
(29,264
)
$
(17,134
)
Income before income taxes
$
204,840

$
97,538

 
$
295,504

$
249,082

(in thousands)
June 30, 2012
December 31, 2011

Identifiable assets
 
 
Oil and gas operations
$
4,596,172

$
4,046,242

Natural gas distribution
1,108,228

1,163,959

Eliminations and other
75,140

27,215

Total
$
5,779,540

$
5,237,416