Quarterly Results of Operations (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
The following tables set forth unaudited results of operations and certain operating results for each quarter during 2014 and 2013. The Company believes that the information reflects all adjustments necessary to present fairly the information below. Basic and diluted earnings per common share are computed independently for each of the quarters presented. Therefore, the sum of quarterly basic and diluted per common share information may not equal annual basic and diluted earnings per common share.
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
(In thousands, except per share data)
2014
 
 
 
 
 
 
 
Revenue
$
157,270

 
$
171,522

 
$
162,654

 
$
147,259

Operating income (loss)
(7,858
)
 
22,414

 
10,581

 
(10,826
)
Net income (loss)
(4,330
)
 
12,955

 
6,291

 
(5,248
)
Earnings (loss) per common share:
 
 
 
 
 
 
 
Basic
$
(0.10
)
 
$
0.29

 
$
0.14

 
$
(0.12
)
Diluted
(0.10
)
 
0.28

 
0.14

 
(0.12
)
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
(In thousands, except per share data)
2013
 
 
 
 
 
 
 
Revenue
$
212,986

 
$
193,470

 
$
182,768

 
$
162,225

Operating income
39,676

 
19,133

 
19,524

 
(9,870
)
Net income
24,667

 
12,114

 
14,211

 
(5,109
)
Earnings per common share:
 
 
 
 
 
 
 
Basic
$
0.46

 
$
0.22

 
$
0.26

 
$
(0.10
)
Diluted
0.45

 
0.22

 
0.25

 
(0.10
)