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Fair Value Measurement | 6 Months Ended
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Jun. 30, 2026
Fair Value Measurement |
Fair Value Measurement | (10) Fair Value Measurement
(a) | Senior Notes
The following table sets forth the fair value and carrying value of the senior notes (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | (Unaudited) | ​
​ | ​ | December 31, 2025 | ​ | June 30, 2026 | ​
​ | ​ ​ | Fair | ​ ​ | Carrying | ​ ​ | Fair | ​ ​ | Carrying | ​
​ | ​ | Value (1) | ​ | Value (2) | ​ | Value (1) | ​ | Value (2) | ​
2029 Notes | ​ | $ | 370,431 | ​ | ​ | 363,204 | ​ | ​ | — | ​ | ​ | — | ​
2030 Notes | ​ | ​ | 607,500 | ​ | ​ | 596,172 | ​ | ​ | 604,500 | ​ | ​ | 592,139 | ​
2036 Notes | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 737,625 | ​ | ​ | 746,587 | ​
Total | ​ | $ | 977,931 | ​ | ​ | 959,376 | ​ | ​ | 1,342,125 | ​ | ​ | 1,338,726 | ​
(1) | Fair values are based on Level 2 market data inputs.
(2) | Carrying values are presented net of unamortized debt issuance costs.
​
(b) | Other Assets and Liabilities
​ The carrying values of restricted cash as of December 31, 2025, accounts receivable and accounts payable as of December 31, 2025 and June 30, 2026 and the amounts outstanding under the Commercial Paper Program as of June 30, 2026 approximated fair value because of their short-term nature. The carrying values of the amounts outstanding under the Credit Facility as of December 31, 2025 and June 30, 2026 and the Term Loan as of June 30, 2026 approximated fair value because the variable interest rates are reflective of current market conditions. See Note 9—Equity-Based Compensation and Note 11—Derivative Instruments to the unaudited condensed consolidated financial statements for information regarding the fair value of equity-based awards and derivative financial instruments, respectively. ​
(c) | HG Acquisition
​ The HG Acquisition was accounted for under the acquisition method of accounting, and as such, the Company estimated the fair value of assets acquired and liabilities assumed as of the Closing Date. See Note 3—Transactions to the unaudited condensed consolidated financial statements for additional information. ​ The fair value of the derivative instruments acquired in the HG Acquisition were measured using a market approach that uses a third-party pricing service and is based on inputs that are either observable in the market or can be corroborated by market data, whereby it is a Level 2 fair value measurement. The fair values of the developed and undeveloped natural gas properties acquired in the HG Acquisition were measured using discounted cash flow valuation techniques based on inputs that are not observable in the market and, as such, are Level 3 fair value measurements. Significant inputs used in the valuation of developed and undeveloped properties included commodity prices, projected reserve quantities, estimated future rates of production, projected reserve recovery factors, development plans (including timing and amount of development), future development costs, operating costs and a weighted-average cost of capital of 9.0%. The fair value of undeveloped acreage with no future development plans acquired in the HG Acquisition was measured using a cost approach based on inputs that are not observable in the market, whereby it is a Level 3 fair value measurement. The significant input used in the valuation of undeveloped acreage with no future development plans was mineral lease acreage prices evaluated from a market participant perspective.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 107 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-107 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 940 -SubTopic 820 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478119/940-820-50-1 + Details
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