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Asset Retirement Obligation (Tables)
 3 Months Ended
Mar. 31, 2017
Asset Retirement Obligation Disclosure [Abstract]  
Changes to Asset Retirement Obligations

The following table describes the changes to the Company’s asset retirement obligations during the three months ended March 31, 2017 (in thousands):

 

 

Three Months Ended

 

 

March 31, 2017

 

Balance at beginning of year

$

5,940

 

Liabilities incurred

 

85

 

Liabilities settled

 

(9

)

Accretion expense

 

41

 

Revision in estimated costs of plugging oil and natural gas wells

 

—

 

Asset retirement obligation at end of period

$

6,057