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Components of Working Capital
12 Months Ended
Dec. 31, 2017
Components Of Working Capital [Abstract]  
Components of Working Capital
10.  COMPONENTS OF WORKING CAPITAL

A summary of accounts receivable, net is as follows:
 
 
December 31,
thousands
 
2017
 
2016
Trade receivables, net
 
$
160,194

 
$
192,606

Other receivables, net
 
45

 
30,415

Total accounts receivable, net
 
$
160,239

 
$
223,021



A summary of other current assets is as follows:
 
 
December 31,
thousands
 
2017
 
2016
Natural gas liquids inventory
 
$
10,788

 
$
7,126

Imbalance receivables
 
1,640

 
3,483

Prepaid insurance
 
2,955

 
2,889

Total other current assets
 
$
15,383

 
$
13,498



A summary of accrued liabilities is as follows:
 
 
December 31,
thousands
 
2017
 
2016
Accrued interest expense
 
$
40,646

 
$
39,834

Short-term asset retirement obligations
 
2,304

 
3,114

Short-term remediation and reclamation obligations
 
833

 
630

Income taxes payable
 
2,495

 
1,006

Other
 
1,714

 
606

Total accrued liabilities
 
$
47,992

 
$
45,190