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Quarterly Financial Data (unaudited) (Tables)
 12 Months Ended
Dec. 31, 2012
Quarterly Financial Data (unaudited) [Abstract]  
Quarterly Financial Information Disclosure [Abstract]
The following is a summary of the quarterly results of operations for 2012 and 2011:

 
 
(in thousands except per-share amounts)
 
2012
 
Year
 
 
First
Quarter
 
 
Second
Quarter
 
 
Third
Quarter
 
 
Fourth
Quarter
 
Total operating revenue
 
$
377,715
 
 
$
87,935
 
 
$
95,705
 
 
$
95,624
 
 
$
98,451
 
(Loss) income from operations
 
 
(13,355
)
 
 
(5,213
)
 
 
1,557
 
 
 
(5,296
)
 
 
(4,403
)
Net (loss) income
 
 
(15,056
)
 
 
(5,649
)
 
 
1,071
 
 
 
(5,663
)
 
 
(4,815
)
Net (loss) income per share of common stock
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Basic
 
$
(0.84
)
 
$
(0.32
)
 
$
0.06
 
 
$
(0.32
)
 
$
(0.27
)
Diluted
 
$
(0.84
)
 
$
(0.32
)
 
$
0.06
 
 
$
(0.32
)
 
$
(0.27
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2011
 
Year
 
 
First
Quarter
 
 
Second
Quarter
 
 
Third
Quarter
 
 
Fourth
Quarter
 
Total operating revenue
 
$
388,461
 
 
$
92,107
 
 
$
101,329
 
 
$
102,834
 
 
$
92,191
 
Loss from operations
 
 
(38,237
)
 
 
(8,782
)
 
 
(3,767
)
 
 
(13,477
)
 
 
(12,211
)
Net loss
 
 
(36,670
)
 
 
(7,937
)
 
 
(3,305
)
 
 
(13,668
)
 
 
(11,760
)
Net loss per share of common stock
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Basic
 
$
(2.08
)
 
$
(0.45
)
 
$
(0.19
)
 
$
(0.77
)
 
$
(0.67
)
Diluted
 
$
(2.08
)
 
$
(0.45
)
 
$
(0.19
)
 
$
(0.77
)
 
$
(0.67
)