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BUSINESS SEGMENTS Business Segments (Tables)
 12 Months Ended
Dec. 31, 2015
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information [Table Text Block]
The following tables present our segment information:

 
2015
 
2014
—

2013
 
(in thousands)
Year Ended December 31,
 
 
 
 
 
Segment revenues:
 
 
 
 
 
Oil and gas exploration and production
$
584,406

 
$
784,636

 
$
322,878

Gas marketing
10,920

 
71,571

 
69,787

Total revenues
$
595,326

 
$
856,207

 
$
392,665

 
 
 
 
 
 
Segment income (loss) before income taxes:
 
 
 
 
 
Oil and gas exploration and production
$
31,429

 
$
344,149

 
$
81,913

Gas marketing
(797
)
 
(445
)
 
(297
)
Unallocated
(137,220
)
 
(166,476
)
 
(114,579
)
Income (loss) before income taxes
$
(106,588
)
 
$
177,228

 
$
(32,963
)
 
 
 
 
 
 
Expenditures for segment long-lived assets:
 
 
 
 
 
Oil and gas exploration and production
$
599,617

 
$
623,912

 
$
403,227

Unallocated
5,051

 
4,680

 
1,379

Total
$
604,668

 
$
628,592

 
$
404,606

 
 
 
 
 
 
As of December 31,
 
 
 
 
 
Segment assets:
 
 
 
 
 
Oil and gas exploration and production
$
2,294,288

 
$
2,258,060

 
 
Gas marketing
4,217

 
6,979

 
 
Unallocated
69,164

 
63,227

 
 
Assets held for sale
2,874

 
2,874

 
 
Total assets
$
2,370,543

 
$
2,331,140