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Segment Information
 3 Months Ended
Mar. 31, 2013
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
 
March 31,
(in thousands)
2013
2012
Operating revenues
 
 
Oil and gas operations
$
254,994

$
223,957

Natural gas distribution
237,685

194,487

Total
$
492,679

$
418,444

Operating income (loss)
 
 
Oil and gas operations
$
26,327

$
26,005

Natural gas distribution
79,293

78,560

Eliminations and corporate expenses
(284
)
(395
)
Total
$
105,336

$
104,170

Other income (expense)
 
 
Oil and gas operations
$
(11,993
)
$
(10,558
)
Natural gas distribution
(3,130
)
(3,004
)
Eliminations and other
58

56

Total
$
(15,065
)
$
(13,506
)
Income before income taxes
$
90,271

$
90,664


(in thousands)
March 31, 2013
December 31, 2012

Identifiable assets
 
 
Oil and gas operations
$
5,100,983

$
4,975,170

Natural gas distribution
1,155,950

1,177,134

Eliminations and other
36,245

23,586

Total
$
6,293,178

$
6,175,890