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Inventories
 12 Months Ended
Dec. 31, 2023
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories at December 31, 2023 and 2022 consisted of the following (in thousands):
Titled InventorySupply and Offtake Agreement (1)Total
December 31, 2023
Crude oil and feedstocks$175,307 $168,549 $343,856 
Refined products and blendstock358,236 133,684 491,920 
Warehouse stock and other (2)324,619 — 324,619 
Total$858,162 $302,233 $1,160,395 
December 31, 2022
Crude oil and feedstocks$112,082 $265,536 $377,618 
Refined products and blendstock188,040 168,624 356,664 
Warehouse stock and other (2)307,701 — 307,701 
Total$607,823 $434,160 $1,041,983 
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(1)Please read Note 12—Inventory Financing Agreements for further information.
(2)Includes $237.6 million and $258.2 million of RINs and environmental credits, reported at the lower of cost or NRV, as of December 31, 2023 and 2022, respectively. Our renewable volume obligation and other gross environmental credit obligations of $286.9 million and $549.8 million, are included in Other accrued liabilities on our consolidated balance sheets as of December 31, 2023 and 2022, respectively.
Inventories valued on the LIFO method were approximately 26% and 22% of total inventories at December 31, 2023 and 2022, respectively. As of December 31, 2023 and December 31, 2022, there was no reserve for the lower of cost or net
realizable value of inventory. As of December 31, 2023 and December 31, 2022, the current replacement cost exceeded the LIFO inventory carrying value by approximately $36.1 million and $46.4 million, respectively.