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Other Property and Equipment (Tables)
 12 Months Ended
Dec. 31, 2014
Other Property and Equipment [Abstract]  
Other Property and Equiment
Other property and equipment consists of the following:
 
December 31,
 
2014
 
2013
 
(in thousands)
 
 
 
 
Plant and pipeline, drilling and other equipment
$
101,655

 
$
74,155

Buildings and leasehold improvements
10,585

 
6,515

Vehicles
3,759

 
2,456

 
115,999

 
83,126

Less accumulated depreciation
(8,452
)
 
(233
)
 
$
107,547

 
$
82,893