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Supplemental Cash Flow Information
 6 Months Ended
Jun. 30, 2016
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 (in thousands):

 
Six Months Ended June 30,
 
2016
 
2015
Decrease (increase) in restricted cash
$
1

 
$
6,766

Decrease (increase) in accounts receivable
(60,062
)
 
(2,248
)
Decrease (increase) in receivable from affiliates
(4,305
)
 
(1,353
)
Decrease (increase) in inventories
(15,918
)
 
(36,065
)
Decrease (increase) in derivatives and margin deposits
(2,163
)
 
(287
)
Decrease (increase) in other current assets
956

 
(3,134
)
Decrease (increase) in other assets
(1,266
)
 
(2,096
)
Increase (decrease) in accounts payable and accrued liabilities
60,867

 
18,730

Increase (decrease) in payable to affiliates
3,997

 
5,580

Increase (decrease) in payables to pre-petition creditors
—

 
(3,836
)
Increase (decrease) in other noncurrent liabilities
(1,453
)
 
47

 
$
(19,346
)
 
$
(17,896
)
  
Other supplemental disclosures
We paid cash interest of $34.9 million and $28.2 million for the six months ended June 30, 2016 and 2015, respectively.
We paid cash for income taxes (net of refunds received) of $2.3 million and $5.7 million for the six months ended June 30, 2016 and 2015, respectively.
We incurred liabilities for construction work in process that had not been paid of $9.1 million and $16.8 million as of June 30, 2016 and 2015, respectively. Such amounts are not included in capital expenditures on the consolidated statements of cash flows.
We financed prepayments of insurance premiums of $4.0 million and $4.6 million for the six months ended June 30, 2016 and 2015, respectively.