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Exit of Butane Optimization Business (Details) - Butane Optimization Business - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations        
Products revenue $ 0 $ 28,397 $ 70,539 $ 116,844
Cost of products sold 0 47,925 72,282 130,339
Selling, general and administrative expenses 0 504 512 1,785
Operating income (loss) $ 0 $ (20,032) $ (2,255) $ (15,280)