v3.10.0.1
Consolidated Statements Of Cash Flows - Supplemental Disclosures (Tables)
 12 Months Ended
Dec. 31, 2018
Supplemental Cash Flow Information [Abstract]  
Consolidated Statement Of Cash Flows
Changes in the components of operating assets and liabilities are as follows (in thousands):
 
 
 
Year Ended December 31,
 
 
2016
 
2017
 
2018
Trade accounts receivable and other accounts receivable
 
$
(31,107
)
 
$
(25,639
)
 
$
24,169

Inventory
 
(3,510
)
 
(47,967
)
 
(3,390
)
Energy commodity derivatives contracts, net of derivatives deposits
 
(692
)
 
8,556

 
(7,078
)
Accounts payable
 
(4,423
)
 
8,954

 
21,146

Accrued payroll and benefits
 
(6,074
)
 
10,596

 
14,015

Accrued interest payable
 
14,347

 
5,014

 
(7,399
)
Accrued taxes other than income
 
(1,421
)
 
1,177

 
1,750

Deferred revenue
 
20,264

 
15,904

 
5,191

Accrued product liabilities
 
20,261

 
44,559

 
(20,677
)
Current and noncurrent environmental liabilities
 
(7,398
)
 
(4,766
)
 
1,226

Other current and noncurrent assets and liabilities
 
(21,762
)
 
(693
)
 
(6,707
)
Total
 
$
(21,515
)
 
$
15,695

 
$
22,246