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Additional Financial Statement Information (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Additional Financial Statement Information |
Schedule of Other Balance Sheet information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) |  | December 31, | December 31,
​ |  | 2024 | 2023
Other Receivables | ​ | ​ | ​ | ​ | ​ | ​
Insurance and Third Party Receivables for Remediation Expenses | ​ | $ | 5,149 | ​ | $ | 4,064
Reimbursable Research and Development Receivable | ​ | ​ | 207 | ​ | ​ | 1,450
Property Insurance Receivable | ​ | ​ | 2,337 | ​ | ​ | 4,000
Financing Receivable | ​ | ​ | 3,242 | ​ | ​ | —
Reimbursable Projects | ​ | ​ | 2,894 | ​ | ​ | 3,253
Total Other Receivables | ​ | $ | 13,829 | ​ | $ | 12,767
​ | ​ | ​ | ​ | ​ | ​ | ​
Prepaids and Deposits | ​ | ​ | ​ | ​ | ​ | ​
Prepaid Insurance | ​ | $ | 7,257 | ​ | $ | 5,494
Other Prepaids and Deposits | ​ | ​ | 3,161 | ​ | ​ | 2,870
Total Prepaids and Deposits | ​ | $ | 10,418 | ​ | $ | 8,364
​ | ​ | ​ | ​ | ​ | ​ | ​
Accrued and Other Current Liabilities | ​ | ​ | ​ | ​ | ​ | ​
Accrued Operating Expense | ​ | $ | 28,897 | ​ | $ | 33,491
Accrued Capital Costs | ​ | ​ | 4,023 | ​ | ​ | 3,812
Accrued Interest | ​ | ​ | 8,067 | ​ | ​ | 8,510
Accrued Compensation | ​ | ​ | 12,651 | ​ | ​ | 10,118
Accrued General and Administrative Expense | ​ | ​ | 2,244 | ​ | ​ | 1,030
Sales Tax Payable | ​ | ​ | 12,721 | ​ | ​ | 1,645
Operating Lease Liabilities | ​ | ​ | 1,568 | ​ | ​ | 1,676
Finance Lease Liabilities | ​ | ​ | 571 | ​ | ​ | —
Contingent Consideration Liability | ​ | ​ | 1,024 | ​ | ​ | 1,221
Advance Billings for Reimbursable Research and Development Expense | ​ | ​ | 431 | ​ | ​ | 1,120
Tax-Related Partnership Distribution Payable | ​ | ​ | 1,340 | ​ | ​ | —
Other | ​ | ​ | 3,802 | ​ | ​ | 1,793
Total Accrued and Other Current Liabilities | ​ | $ | 77,339 | ​ | $ | 64,416
​ | ​ | ​ | ​ | ​ | ​ | ​
Other Long-Term Liabilities | ​ | ​ | ​ | ​ | ​ | ​
Noncurrent Operating Lease Liabilities | ​ | $ | 14,040 | ​ | $ | 14,716
Noncurrent Finance Lease Liabilities | ​ | ​ | 1,747 | ​ | ​ | —
Contingent Consideration Liability | ​ | ​ | 1,548 | ​ | ​ | 2,078
Total Other Long-Term Liabilities | ​ | $ | 17,335 | ​ | $ | 16,794
Schedule of Other Statement of Operations information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) | ​ | Year Ended December 31,
​ |  | 2024 |  | 2023 |  | 2022
Depreciation, Amortization and Accretion | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Depreciation - Property, Plant and Equipment | ​ | $ | 40,566 | ​ | $ | 37,859 | ​ | $ | 30,254
Amortization - Intangible Assets | ​ | ​ | 37,053 | ​ | ​ | 37,569 | ​ | ​ | 36,735
Accretion of Asset Retirement Obligations | ​ | ​ | 1,369 | ​ | ​ | 1,204 | ​ | ​ | 535
Amortization of Finance Right-of-Use Assets | ​ | ​ | 171 | ​ | ​ | — | ​ | ​ | —
Total Depreciation, Amortization and Accretion | ​ | $ | 79,159 | ​ | $ | 76,632 | ​ | $ | 67,524
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other Operating Expense (Income), Net | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Loss (Gain) on Disposal of Asset, Net | ​ | $ | 102 | ​ | $ | (2,606) | ​ | $ | 478
Transaction Costs | ​ | ​ | 997 | ​ | ​ | 802 | ​ | ​ | 1,520
Abandoned Projects | ​ | ​ | 1,537 | ​ | $ | 216 | ​ | $ | 72
Other | ​ | ​ | (367) | ​ | ​ | 358 | ​ | ​ | 142
Total Other Operating Expense (Income), Net | ​ | $ | 2,269 | ​ | $ | (1,230) | ​ | $ | 2,212
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest Expense, Net | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest on Debt Instruments | ​ | $ | 34,481 | ​ | $ | 34,639 | ​ | $ | 31,609
Amortization of Debt Issuance Costs | ​ | ​ | 3,057 | ​ | ​ | 2,590 | ​ | ​ | 2,440
Interest on Finance Lease Obligations | ​ | ​ | 40 | ​ | ​ | — | ​ | ​ | —
Total Interest Expense | ​ | ​ | 37,578 | ​ | ​ | 37,229 | ​ | ​ | 34,049
Less: Capitalized Interest | ​ | ​ | (1,345) | ​ | ​ | (4,376) | ​ | ​ | (4,864)
Total Interest Expense, Net | ​ | $ | 36,233 | ​ | $ | 32,853 | ​ | $ | 29,185
Schedule of Significant Customers | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ |  | 2024 |  | ​ | 2023 |  | ​ | 2022 |
ConocoPhillips | ​ | 32 | % | ​ | 33 | % | ​ | 34 | %
Chevron U.S.A. Inc. | ​ | 21 | % | ​ | 18 | % | ​ | 11 | %
Mewbourne Oil Company | ​ | ** | % | ​ | 11 | % | ​ | 12 | %
​
** | Revenue was less than 10% of total revenue.
Schedule of Significant non-cash activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Non-Cash Item | ​ | ​ | Location | ​ | ​ | ​ | ​ | ​ | ​
Non-Cash Investing and Financing Activities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Shares of Class A Common Stock Issued in Acquisition | ​ | ​ | Note 4. Acquisitions | ​ | ​ | ​
Accrued Additions to Property, Plant and Equipment | ​ | ​ | Note 5. Property, Plant and Equipment
Asset Retirement Obligations | ​ | ​ | Note 7. Asset Retirement Obligations
Increase in TRA Liability Related to Share Redemption | ​ | ​ | Note 8. TRA Liability | ​ | ​ | ​
Right-of-Use Assets Obtained in Exchange for Operating and Finance Lease Liabilities, Net | ​ | ​ | Note 10. Leases
Treasury Stock Reimbursement | ​ | ​ | Note 12. Stockholders' Equity
​

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