Annual report pursuant to Section 13 and 15(d)

Asset Retirement Obligations (Tables)

v3.3.1.900
Asset Retirement Obligations (Tables)
12 Months Ended
Dec. 31, 2015
Asset Retirement Obligation [Abstract]  
Estimated Fair Value of Company's Asset Retirement Obligations

 

 

 

 

 

 

 

 

 

 

 

 

Year Ended December 31,

 

 

 

 

 

 

 

(in thousands)

 

 

2015

 

 

2014

 

 

2013

Balance at January 1

 

$

14,846 

 

$

11,464 

 

$

10,368 

Accretion expense

 

 

778 

 

 

720 

 

 

643 

Additions

 

 

1,085 

 

 

2,526 

 

 

453 

Revisions

 

 

(543)

 

 

136 

 

 

 -

Balance at December 31

 

$

16,166 

 

$

14,846 

 

$

11,464