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Summarized Quarterly Financial Information - Unaudited
 12 Months Ended
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]  
Summarized Quarterly Financial Information - Unaudited
Summarized Quarterly Financial Information - Unaudited

Summarized quarterly financial information is as follows (amounts in thousands except per share data):
 
Quarter Ended
 
March 31
June 30
September 30
December 31
2017
 
 
 
 
Revenues
$
20,772

$
24,251

$
28,184

$
35,080

Income (loss) from operations
(3,633
)
(2,289
)
(1,885
)
221

Loss available to common stockholders
(4,918
)
(3,385
)
(3,085
)
$
(389
)
Loss per share:
 
 
 
 
Basic
$
(0.23
)
$
(0.16
)
$
(0.15
)
$
(0.02
)
Diluted
$
(0.23
)
$
(0.16
)
$
(0.15
)
$
(0.02
)
 
 
 
 
 
2016:
 
 
 
 
Revenues
$
17,320

$
15,824

$
17,094

$
16,429

Loss from operations (1)
(37,557
)
(22,383
)
(22,039
)
(8,374
)
Loss available to common stockholders (1)
(39,137
)
(24,143
)
(23,306
)
(9,659
)
Loss per share:
 
 
 
 
Basic
$
(2.09
)
$
(1.38
)
$
(1.31
)
$
(0.46
)
Diluted
$
(2.09
)
$
(1.38
)
$
(1.31
)
$
(0.46
)



(1) Loss from operations and loss available to common stockholders reported during the three months ended March 31, June 30 and September 30, 2016 included pretax ceiling test write-downs of $18.9 million, $12.8 million and $8.7 million, respectively.