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Quarterly Financial Data (Unaudited)
 12 Months Ended
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Data (Unaudited)
Quarterly Financial Information (Unaudited)

The following table presents selected quarterly financial data for the periods indicated (in thousands, except per share data):
 
First
 
Second
 
Third
 
Fourth
 
Quarter
 
Quarter
 
Quarter
 
Quarter
Year Ended December 31, 2017
 
 
 
 
 
 
 
Revenues
$
303,087

 
$
315,202

 
$
295,311

 
$
408,460

Operating (losses) earnings
(1,584
)
 
619

 
(1,290
)
 
3,757

Earnings (losses) from continuing operations
(860
)
 
(282
)
 
(3,033
)
 
3,693

Net (losses) earnings
(860
)
 
(282
)
 
(3,033
)
 
3,693

 
 
 
 
 
 
 
 
Earnings (losses) per share:
 
 
 
 
 
 
 
From continuing operations
$
(0.20
)
 
$
(0.07
)
 
$
(0.72
)
 
$
0.88

From investment in unconsolidated
 
 
 
 
 
 
 
affiliate
—

 
—

 
—

 
—

Basic and diluted net (losses) earnings per share
$
(0.20
)
 
$
(0.07
)
 
$
(0.72
)
 
$
0.88

 
 
 
 
 
 
 
 
Year Ended December 31, 2016
 
 
 
 
 
 
 
Revenues
$
250,531

 
$
293,163

 
$
256,877

 
$
298,969

Operating (losses) earnings
2,339

 
5,601

 
(1,822
)
 
(64
)
Earnings (losses) from continuing operations
1,554

 
3,540

 
(983
)
 
(168
)
Net (losses) earnings
1,430

 
3,404

 
(2,153
)
 
(168
)
 
 
 
 
 
 
 
 
Earnings (losses) per share:
 
 
 
 
 
 
 
From continuing operations
$
0.37

 
$
0.84

 
$
(0.23
)
 
$
(0.04
)
From investment in unconsolidated
 
 
 
 
 
 
 
affiliate
(0.03
)
 
(0.03
)
 
(0.28
)
 
—

Basic and diluted net (losses) earnings per share
$
0.34

 
$
0.81

 
$
(0.51
)
 
$
(0.04
)