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v3.22.1

SEGMENT REPORTING (Tables) | 3 Months Ended
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Mar. 31, 2022
Segment Reporting [Abstract] |
Reconciliation of Third Party Revenues to Direct Revenues | The following table reconciles third-party revenues to direct revenues for the three months ended March 31, 2022 and 2021 (in thousands):
| For the Three Months Ended March 31, 2022 |  | For the Three Months Ended March 31, 2021
| Third-party revenues |  | Intersegment revenues, net |  |  |  | Direct revenues |  | Third-party revenues |  | Intersegment revenues, net |  | Direct revenues
Environmental Services | $ | 940,798 |  |  | $ | 6,647 |  |  |  |  | $ | 947,445 |  |  | $ | 652,878 |  |  | $ | 1,724 |  |  | $ | 654,602 |
Safety-Kleen Sustainability Solutions | 228,239 |  |  | (6,647) |  |  |  |  | 221,592 |  |  | 155,191 |  |  | (1,724) |  |  | 153,467 |
Corporate Items | 72 |  |  | — |  |  |  |  | 72 |  |  | 79 |  |  | — |  |  | 79 |
Total | $ | 1,169,109 |  |  | $ | — |  |  |  |  | $ | 1,169,109 |  |  | $ | 808,148 |  |  | $ | — |  |  | $ | 808,148 |
Reconciliation to Consolidated Statements of Income to Adjusted EBITDA | The following table presents Adjusted EBITDA information used by management by reported segment (in thousands):
|  |  | For the Three Months Ended
|  |  | March 31,
|  |  |  |  | 2022 |  | 2021
Adjusted EBITDA: |  |  |  |  |  |  |
Environmental Services |  |  |  |  | $ | 183,602 |  |  | $ | 140,254 |
Safety-Kleen Sustainability Solutions |  |  |  |  | 51,877 |  |  | 31,632 |
Corporate Items |  |  |  |  | (55,220) |  |  | (42,435) |
Total |  |  |  |  | 180,259 |  |  | 129,451 |
Reconciliation to Consolidated Statements of Operations: |  |  |  |  |  |  |
Accretion of environmental liabilities |  |  |  |  | 3,156 |  |  | 2,953 |
Stock-based compensation |  |  |  |  | 5,712 |  |  | 3,480 |
Depreciation and amortization |  |  |  |  | 84,298 |  |  | 72,163 |
Income from operations |  |  |  |  | 87,093 |  |  | 50,855 |
Other (income) expense, net |  |  |  |  | (704) |  |  | 1,228 |
Interest expense, net of interest income |  |  |  |  | 25,017 |  |  | 17,918 |
Income before provision for income taxes |  |  |  |  | $ | 62,780 |  |  | $ | 31,709 |

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- Definition Tabular disclosure of all significant reconciling items in the reconciliation of total revenues from reportable segments to the entity's consolidated revenues. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 + Details
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