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STATEMENTS OF CASH FLOWS | 12 Months Ended
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Dec. 31, 2015
Statement of Cash Flows [Abstract] |
STATEMENTS OF CASH FLOWS | STATEMENTS OF CASH FLOWS Changes in current assets and current liabilities were as follows:
| Year Ended December 31,
| 2015 |  | 2014 |  | 2013
| (Thousands of Dollars)
Decrease (increase) in current assets: |  |  |  |  |
Accounts receivable | $ | 67,257 |  |  | $ | 72,298 |  |  | $ | 107,209 |
Receivable from related parties | — |  |  | 50,918 |  |  | 58,692 |
Inventories | 16,776 |  |  | 82,075 |  |  | 31,975 |
Other current assets | 4,414 |  |  | 3,785 |  |  | 26,139 |
Increase (decrease) in current liabilities: |  |  |  |  |
Accounts payable | (32,152 | ) |  | (153,671 | ) |  | (96,330 | )
Payable to related party | (872 | ) |  | 837 |  |  | 6,922 |
Accrued interest payable | 941 |  |  | 303 |  |  | 9,370 |
Accrued liabilities | (7,834 | ) |  | 22,980 |  |  | (32,452 | )
Taxes other than income tax | (1,522 | ) |  | 4,341 |  |  | (87 | )
Income tax payable | 3,551 |  |  | (1,448 | ) |  | 1,338 |
Changes in current assets and current liabilities | $ | 50,559 |  |  | $ | 82,418 |  |  | $ | 112,776 |
The above changes in current assets and current liabilities differ from changes between amounts reflected in the applicable consolidated balance sheets due to:
• | current assets and current liabilities acquired and disposed during the period;
• | the change in the amount accrued for capital expenditures; and
• | the effect of foreign currency translation.
Non-cash financing activities for the years ended December 31, 2015 and 2013 mainly consist of changes in the fair values of our interest rate swap agreements. Cash flows related to interest and income taxes were as follows:
| Year Ended December 31,
| 2015 |  | 2014 |  | 2013
| (Thousands of Dollars)
Cash paid for interest, net of amount capitalized | $ | 133,388 |  |  | $ | 129,377 |  |  | $ | 113,805 |
Cash paid for income taxes, net of tax refunds received | $ | 9,971 |  |  | $ | 6,699 |  |  | $ | 11,386 |

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- Definition The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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