Annual report pursuant to Section 13 and 15(d)

Asset Retirement Obligations (Tables)

v3.6.0.2
Asset Retirement Obligations (Tables)
12 Months Ended
Dec. 31, 2016
Asset Retirement Obligations [Abstract]  
Estimated Fair Value of Company's Asset Retirement Obligations



 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

(in thousands)

 

 

2016

 

 

2015

 

 

2014

Balance at January 1

 

$

16,166 

 

$

14,846 

 

$

11,464 

Accretion

 

 

903 

 

 

778 

 

 

720 

Additions

 

 

 -

 

 

1,085 

 

 

2,526 

Acquisitions and dispositions

 

 

1,544 

 

 

 -

 

 

 -

Revisions

 

 

(1)

 

 

(543)

 

 

136 

Balance at December 31

 

$

18,612 

 

$

16,166 

 

$

14,846