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Supplemental Cash Flow Information
 6 Months Ended
Jun. 30, 2019
Supplemental Cash Flow Information [Abstract]  
SUPPLEMENTAL CASH FLOW INFORMATION
SUPPLEMENTAL CASH FLOW INFORMATION
The following table summarizes the changes in the components of operating assets and liabilities shown on our condensed consolidated statements of cash flows, net of the effects of acquisitions (in thousands):
 
Six Months Ended June 30,
 
2019
 
2018
Decrease (increase) in restricted cash
$
—

 
$
33

Decrease (increase) in accounts receivable
(100,365
)
 
99,923

Decrease (increase) in receivable from affiliates
(887
)
 
(92
)
Decrease (increase) in inventories
(12,515
)
 
40,051

Decrease (increase) in other current assets
(6,982
)
 
(7,338
)
Decrease (increase) in other assets
1,027

 
(3,702
)
Increase (decrease) in accounts payable and accrued liabilities
35,487

 
(111,712
)
Increase (decrease) in payable to affiliates
(473
)
 
(6,088
)
Increase (decrease) in other noncurrent liabilities
8,765

 
424

 
$
(75,943
)
 
$
11,499

  
Other supplemental disclosures
We paid cash interest of $66.9 million and $82.9 million for the six months ended June 30, 2019 and 2018, respectively.
We paid cash income taxes, net of refunds, of $1.7 million and $14.7 million for the six months ended June 30, 2019 and 2018, respectively.
We incurred liabilities for capital expenditures that had not been paid of $49.9 million and $54.5 million as of June 30, 2019 and 2018, respectively. Such amounts are not included in capital expenditures on the condensed consolidated statements of cash flows.