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Costs Incurred for Property Acquisition, Exploration and Development (Tables)
6 Months Ended
Jun. 30, 2017
Extractive Industries [Abstract]  
Costs Incurred for Property Acquisition, Exploration and Development

 

 

Six Months
Ended
June 30,

2017

 

 

Year

Ended
December 31, 2016

 

 

 

(in thousands)

 

Acquisitions:

 

 

 

 

 

 

 

 

Acreage purchases

 

$

34,015

 

 

$

33,142

 

Oil and gas properties

 

 

6,875

 

 

 

3,098,772

 

Asset retirement obligations

 

 

 

 

 

21,908

 

Development

 

 

505,739

 

 

 

497,795

 

Exploration:

 

 

 

 

 

 

 

 

Drilling

 

 

706

 

 

 

37,680

 

Expense

 

 

21,968

 

 

 

30,027

 

Stock-based compensation expense

 

 

1,035

 

 

 

2,298

 

Gas gathering facilities:

 

 

 

 

 

 

 

 

Development

 

 

2,839

 

 

 

3,595

 

Subtotal

 

 

573,177

 

 

 

3,725,217

 

Asset retirement obligations

 

 

3,855

 

 

 

(24,064

)

Total costs incurred

 

$

577,032

 

 

$

3,701,153

 

 

(a)

Includes costs incurred whether capitalized or expensed.