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Other Financial Information | 9 Months Ended
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Sep. 30, 2016
Other Financial Information [Abstract] |
Other Financial Information | Other Financial Information OTHER OPERATING REVENUES – Other operating revenues in the Consolidated Statements of Income include the following items:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(Thousands of dollars) | 2016 |  | 2015 |  | 2016 |  | 2015
Renewable Identification Numbers (RINs) sales | $ | 48,047 |  |  | $ | 20,037 |  |  | $ | 130,690 |  |  | $ | 93,883 |
Other | 772 |  |  | 717 |  |  | 2,940 |  |  | 2,331 |
Other operating revenues | $ | 48,819 |  |  | $ | 20,754 |  |  | $ | 133,630 |  |  | $ | 96,214 |
CASH FLOW DISCLOSURES — Cash income taxes paid, net of refunds, were $57,472,000 and $77,830,000 for the nine month periods ended September 30, 2016 and 2015, respectively. Interest paid was $35,244,000 and $31,337,000 for the nine month periods ended September 30, 2016 and 2015, respectively.
| Nine Months Ended September 30,
(Thousands of dollars) | 2016 |  | 2015
Accounts receivable | $ | (3,403 | ) |  | $ | (5,742 | )
Inventories | 3,364 |  |  | (8,082 | )
Prepaid expenses and other current assets | 11,891 |  |  | (63 | )
Accounts payable and accrued liabilities | (6,289 | ) |  | (16,642 | )
Income taxes payable | (181 | ) |  | (11,695 | )
Current deferred income tax liabilities | — |  |  | 9,030 |
Net decrease (increase) in noncash operating working capital | $ | 5,382 |  |  | $ | (33,194 | )

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