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Components of Working Capital (Tables)
12 Months Ended
Dec. 31, 2018
Components Of Working Capital [Abstract]  
Accounts Receivable, Net Table
A summary of accounts receivable, net is as follows:
 
 
December 31,
thousands
 
2018
 
2017
Trade receivables, net
 
$
221,119

 
$
160,507

Other receivables, net
 
45

 
210

Total accounts receivable, net
 
$
221,164

 
$
160,717

Other Current Assets Table
A summary of other current assets is as follows:
 
 
December 31,
thousands
 
2018
 
2017
NGLs inventory
 
$
6,466

 
$
10,958

Imbalance receivables
 
9,035

 
2,063

Prepaid insurance
 
1,972

 
2,955

Contract assets
 
5,399

 

Other
 
4,184

 

Total other current assets
 
$
27,056

 
$
15,976

Accrued Liabilities Table
A summary of accrued liabilities is as follows:
 
 
December 31,
thousands
 
2018
 
2017
Accrued interest expense
 
$
70,968

 
$
40,646

Short-term asset retirement obligations
 
25,938

 
2,304

Short-term remediation and reclamation obligations
 
863

 
833

Income taxes payable
 
384

 
2,495

Contract liabilities
 
16,235

 

Other
 
14,760

 
1,714

Total accrued liabilities
 
$
129,148

 
$
47,992