v3.21.1
SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
 3 Months Ended
Mar. 31, 2021
Supplemental Cash Flow Information [Abstract]  
Schedule of Changes in Current Assets and Liabilities [Table Text Block]
Changes in current assets and current liabilities were as follows:
 Three Months Ended March 31,
 20212020
 (Thousands of Dollars)
Decrease (increase) in current assets:
Accounts receivable$12,232 $7,778 
Inventories(6,471)1,648 
Other current assets9,689 7,007 
Increase (decrease) in current liabilities:
Accounts payable5,067 (18,082)
Accrued interest payable27,149 2,680 
Accrued liabilities(19,082)(5,679)
Taxes other than income tax(4,187)(5,137)
Changes in current assets and current liabilities$24,397 $(9,785)
Schedule of Supplemental Cash Flow Information [Table Text Block]
Cash flows related to interest and income taxes were as follows:
 Three Months Ended March 31,
 20212020
 (Thousands of Dollars)
Cash paid for interest, net of amount capitalized$24,737 $43,172 
Cash paid for income taxes, net of tax refunds received$554 $90 
Schedule of Cash and Cash Equivalents [Table Text Block] “Cash, cash equivalents and restricted cash” on the consolidated statements of cash flows was included in the consolidated balance sheets as follows:
March 31, 2021December 31, 2020
(Thousands of Dollars)
Cash and cash equivalents$28,246 $153,625 
Other long-term assets, net8,801 8,801 
Cash, cash equivalents and restricted cash$37,047 $162,426