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Asset Retirement Obligations (Tables) | 9 Months Ended
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Sep. 30, 2021
Solaris Midstream Holdings, LLC and Subsidiaries |
Asset Retirement Obligations |
Schedule of reconciliation of the changes in asset retirement obligations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) |  | 2021 |  | 2020
Asset Retirement Obligations at January 1, | ​ | $ | 5,291 | ​ | $ | 3,375
Liabilities Incurred | ​ | ​ | 533 | ​ | ​ | 738
Liabilities Incurred on Acquisition | ​ | ​ | — | ​ | ​ | 776
Reduction for Assets Sold | ​ | ​ | — | ​ | ​ | (22)
Accretion Expense | ​ | ​ | 208 | ​ | ​ | 179
Asset Retirement Obligations at September 30 | ​ | $ | 6,032 | ​ | $ | 5,046

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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