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Components of Working Capital
9 Months Ended
Sep. 30, 2014
Components Of Working Capital [Abstract]  
Components of Working Capital
7.  COMPONENTS OF WORKING CAPITAL

A summary of other current assets is as follows:
thousands
 
September 30,
2014
 
December 31,
2013
Natural gas liquids inventory
 
$
2,022

 
$
2,584

Natural gas imbalance receivables
 
1,181

 
3,605

Prepaid insurance
 
2,663

 
2,900

Other
 
1,049

 
1,710

Total other current assets
 
$
6,915

 
$
10,799


7.  COMPONENTS OF WORKING CAPITAL (CONTINUED)

A summary of accrued liabilities is as follows:
thousands
 
September 30,
2014
 
December 31,
2013
Accrued capital expenditures
 
$
92,559

 
$
94,750

Accrued plant purchases
 
30,563

 
21,396

Accrued interest expense
 
28,525

 
18,119

Short-term asset retirement obligations
 
483

 
1,966

Short-term remediation and reclamation obligations
 
562

 
562

Other
 
369

 
1,241

Total accrued liabilities
 
$
153,061

 
$
138,034