XML 29 R29.htm IDEA: XBRL DOCUMENT v3.2.0.727
Asset Retirement Obligation (Tables)
6 Months Ended
Jun. 30, 2015
Asset Retirement Obligation Disclosure [Abstract]  
Changes to Company's Asset Retirement Obligations

The following table describes the changes to the Company’s asset retirement obligations during the six months ended June 30, 2015 and 2014 (in thousands):

 

 

Six Months Ended

 

 

June 30,

 

 

2015

 

 

2014

 

Balance at beginning of year

$

5,301

 

 

$

4,837

 

Liabilities incurred

 

271

 

 

 

91

 

Liabilities settled

 

(65

)

 

 

(31

)

Accretion expense

 

86

 

 

 

84

 

Revision in estimated costs of plugging oil and natural gas wells

 

 

 

 

20

 

Asset retirement obligation at end of period

$

5,593

 

 

$

5,001