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ASSET RETIREMENT OBLIGATIONS (Tables)
3 Months Ended
Mar. 31, 2015
ASSET RETIREMENT OBLIGATIONS  
Schedule of reconciliation of asset retirement obligations

 

 

Three Months Ended

 

Year Ended

 

 

 

March 31, 2015

 

December 31, 2014

 

 

 

(in thousands)

 

Asset retirement obligation liability, beginning balance

 

$

7,471

 

$

7,247

 

Settlements

 

 

(52

)

Accretion of liability

 

101

 

407

 

Adjustment reflecting updated estimates

 

 

(131

)

Asset retirement obligation liability, ending balance

 

$

7,572

 

$

7,471