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Supplemental Balance Sheet Information (Tables) | 12 Months Ended
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Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract] |
Schedule of Intangible and Other Assets, Net | Components of "Intangibles and other assets, net" at December 31, 2021 and 2020 were as follows:
| 2021 |  | 2020
Catalyst and turnaround costs | $ | 687 |  |  | $ | 803 |
Other intangible assets | 358 |  |  | 586 |
Other | 1,153 |  |  | 1,416 |
| $ | 2,198 |  |  | $ | 2,805 |
Schedule of Other Accrued Liabilities | Components of "Other accrued liabilities" at December 31, 2021 and 2020 were as follows:
| 2021 |  | 2020
Accrued interest | $ | 15,135 |  |  | $ | 16,104 |
Asset retirement obligations | 261 |  |  | 1,692 |
Property and other taxes payable | 4,631 |  |  | 4,869 |
Accrued payroll | 2,973 |  |  | 3,244 |
Operating lease liabilities | 6,600 |  |  | 7,529 |
Other | 250 |  |  | 969 |
| $ | 29,850 |  |  | $ | 34,407 |
Schedule of Asset Retirement Obligations | The schedule below summarizes the changes in our asset retirement obligations:
| Year Ended December 31,
| 2021 |  | 2020
| (In thousands)
Beginning asset retirement obligations | $ | 8,759 |  |  | $ | 8,936 |
Revisions to existing liabilities 1 | — |  |  | 918 |
Accretion expense | 375 |  |  | 410 |
Liabilities settled | (62) |  |  | (1,505) |
Ending asset retirement obligations | 9,072 |  |  | 8,759 |
Current portion of asset retirement obligations 2 | (261) |  |  | (1,692) |
Long-term portion of asset retirement obligations 3 | $ | 8,811 |  |  | $ | 7,067 |
1 Several factors are considered in the annual review process, including inflation rates, current estimates for removal cost, discount rates, and the estimated remaining useful life of the assets. 2 The current portion of asset retirement obligations is included in "Other current liabilities" on the Partnership's Consolidated Balance Sheets. 3 The non-current portion of asset retirement obligations is included in "Other long-term obligations" on the Partnership's Consolidated Balance Sheets.

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- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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