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Selected Quarterly Data (Unaudited)
 12 Months Ended
Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]  
Selected Quarterly Data (Unaudited)
Selected Quarterly Data (Unaudited)
 
 
2015
 
Fourth
Quarter
 
Third
Quarter
 
Second
Quarter
 
First
Quarter
($ in thousands, except share data)
 
 
 
 
 
 
 
Revenues
$
86,115

 
$
92,375

 
$
99,656

 
$
103,831

Operating Income
16,506

 
23,122

 
16,208

 
24,542

Net Income (Loss) Attributable to Common Stockholders
6,636

 
(649
)
 
9,777

 
19,342

Earnings (loss) per share—Basic
$
0.78

 
$
(0.07
)
 
$
1.10

 
$
2.16

Earnings (loss) per share—Diluted
$
0.76

 
$
(0.07
)
 
$
1.08

 
$
2.11

 
 
2014
 
Fourth
Quarter
 
Third
Quarter (1)
 
Second
Quarter
 
First
Quarter
($ in thousands, except share data)
 
 
 
 
 
 
 
Revenues
$
112,137

 
$
117,841

 
$
112,749

 
$
107,871

Operating Income
36,665

 
38,927

 
22,502

 
32,626

Net Income Attributable to Common Stockholders
18,879

 
37,340

 
19,543

 
21,938

Earnings per share—Basic
$
2.09

 
$
4.10

 
$
2.14

 
$
2.41

Earnings per share—Diluted
$
2.05

 
$
4.02

 
$
2.10

 
$
2.34

 
(1)
The third quarter of 2014 includes a net tax benefit of approximately $15.5 million due to completion of the audit of the Company’s 2011 federal corporate income tax return.