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Inventories | 12 Months Ended
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Dec. 31, 2021
Inventory Disclosure [Abstract] |
Inventories | Inventories Inventories at December 31, 2021 and 2020 consisted of the following (in thousands):
| Titled Inventory |  | Supply and Offtake Agreement (1) |  | Total
December 31, 2021 |  |  |  |  |
Crude oil and feedstocks | $ | 102,085 |  |  | $ | 199,282 |  |  | $ | 301,367 |
Refined products and blendstock | 179,737 |  |  | 142,872 |  |  | 322,609 |
Warehouse stock and other (2) | 166,341 |  |  | — |  |  | 166,341 |
Total | $ | 448,163 |  |  | $ | 342,154 |  |  | $ | 790,317 |
December 31, 2020 |  |  |  |  |
Crude oil and feedstocks | $ | 88,307 |  |  | $ | 75,340 |  |  | $ | 163,647 |
Refined products and blendstock | 112,146 |  |  | 83,601 |  |  | 195,747 |
Warehouse stock and other (2) | 70,461 |  |  | — |  |  | 70,461 |
Total | $ | 270,914 |  |  | $ | 158,941 |  |  | $ | 429,855 |
_________________________________________________________ (1)Please read Note 11—Inventory Financing Agreements for further information. (2)Includes $120.1 million and $26.7 million of RINs and environmental credits, reported at the lower of cost or NRV, as of December 31, 2021 and 2020, respectively. Our renewable volume obligation and other gross environmental credit obligations of $311.0 million and $150.5 million, reported at market value, are included in Other accrued liabilities on our consolidated balance sheets as of December 31, 2021 and 2020, respectively. Our reserve for the lower of cost and NRV of inventory was $0.5 million and $10.6 million as of December 31, 2021 and 2020, respectively. As of December 31, 2021, the current replacement cost exceeded the LIFO inventory carrying value by approximately $46.0 million. Our LIFO inventories, net of the lower of cost or NRV reserve, were equal to current cost as of December 31, 2020.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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