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Supplemental Quarterly Financial Information (Tables)
 12 Months Ended
Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]  
Supplemental Quarterly Financial Information
Supplemental Quarterly Financial Information (Unaudited)
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
2012
 

 
 

 
 

 
 

Revenues
$
84,411

 
$
76,845

 
$
77,699

 
$
78,194

Operating loss 1
$
(3,422
)
 
$
(38,043
)
 
$
(24,485
)
 
$
(81,141
)
Loss attributable to Penn Virginia Corp.
$
(11,899
)
 
$
(5,638
)
 
$
(32,611
)
 
$
(54,441
)
Loss per share - Basic 2
$
(0.26
)
 
$
(0.12
)
 
$
(0.71
)
 
$
(1.05
)
Loss per share - Diluted 2
$
(0.26
)
 
$
(0.12
)
 
$
(0.71
)
 
$
(1.05
)
Weighted-average shares outstanding:
 

 
 

 
 

 
 

Basic
45,945

 
46,030

 
46,050

 
53,607

Diluted
45,945

 
46,030

 
46,050

 
53,607

 
 
 
 
 
 
 
 
2011
 

 
 

 
 

 
 

Revenues
$
68,583

 
$
73,618

 
$
83,353

 
$
80,451

Operating loss 3
$
(28,529
)
 
$
(80,713
)
 
$
(9,031
)
 
$
(37,146
)
Loss attributable to Penn Virginia Corp.
$
(26,340
)
 
$
(71,918
)
 
$
(6,718
)
 
$
(27,939
)
Loss per share - Basic 2
$
(0.58
)
 
$
(1.57
)
 
$
(0.15
)
 
$
(0.61
)
Loss per share - Diluted 2
$
(0.58
)
 
$
(1.57
)
 
$
(0.15
)
 
$
(0.61
)
Weighted-average shares outstanding:
 

 
 

 
 

 
 

Basic
45,687

 
45,768

 
45,817

 
45,864

Diluted
45,687

 
45,768

 
45,817

 
45,864

________________________
1   Includes impairments of oil and gas properties of $28.6 million, $0.7 million and $75.2 million during the quarters ended June 30, 2012, September 30, 2012 and December 31, 2012, respectively.
2   The sum of the quarters may not equal the total of the respective year's earnings per common share due to changes in weighted-average shares outstanding throughout the year.
3   Includes impairments of $71.1 million and $33.6 million during the quarters ended June 30, 2011 and December 31, 2011, respectively.