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v3.25.1

Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Accounts Receivable, after Allowance for Credit Loss, Current |  | $ 78,356,000 |  | $ 85,242,000
Oil and Gas, Joint Interest Billing, Receivable |  | 3,300,000 |  | 4,700,000
Income Taxes Receivable |  | 3,100,000 |  | 3,100,000
Accounts Payable and Accrued Liabilities, Current |  | 298,900,000 |  | 284,600,000
Accounts Receivable, Allowance for Credit Loss |  | 0 |  | 0
Inventory, Raw Materials and Supplies, Gross |  | 8,700,000 |  | 11,000,000
Prepaid Expense |  | 8,300,000 |  | 4,600,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment |  | 1,100,000 |  | 1,100,000
Payments of Debt Issuance Costs |  | (0) | $ 7,000 |
Amortization of Debt Issuance Costs |  | 2,034,000 | 2,053,000 |
Debt Instrument, Unamortized Discount | [1] | 14,771,000 |  | 17,197,000
Amortization of Debt Discount (Premium) |  | 2,426,000 | 2,453,000 |
Income Tax Expense (Benefit) |  | 9,939,000 | 2,297,000 |
Texas Margin Tax [Member] |  |  |  |
Income Tax Expense (Benefit) |  | $ 0 | 223,000 |
Minimum [Member] |  |  |  |
Oil and Natural Gas Marketing Contracts, Term Over Which Consideration is Received from Purchaser |  | 1 month |  |
Maximum [Member] |  |  |  |
Oil and Natural Gas Marketing Contracts, Term Over Which Consideration is Received from Purchaser |  | 2 months |  |
Senior Unsecured Notes and Revolving Credit Facility [Member] |  |  |  |
Debt Issuance Costs, Gross |  | $ 25,100,000 |  |
Payments of Debt Issuance Costs |  | 0 |  | $ 58,000
Amortization of Debt Issuance Costs |  | 2,000,000 | 2,100,000 |
Senior Unsecured Notes Due 2024 [Member] |  |  |  |
Debt Instrument, Unamortized Discount |  | 30,000,000 |  |
Amortization of Debt Discount (Premium) |  | $ 2,400,000 | $ 2,500,000 |
Transportation Equipment [Member] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 5 years |  |
Building [Member] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 40 years |  |
Field Equipment [Member] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 7 years |  |
Furniture and Fixtures [Member] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 5 years |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Largest Purchaser [Member] |  |  |  |
Concentration Risk, Percentage |  | 81.00% |  | 76.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Second Largest Purchaser [Member] |  |  |  |
Concentration Risk, Percentage |  | 10.00% |  | 18.00%
Electric Power Infrastructure [Member] |  |  |  |
Accounts Payable and Accrued Liabilities, Current |  | $ 1,900,000 |  | $ 1,400,000
Crude Oil, Natural Gas and Natural Gas Liquids [Member] |  |  |  |
Accounts Receivable, after Allowance for Credit Loss, Current |  | 70,100,000 |  | 76,000,000
Aid-in-construction Receivables [Member] | WTG Gas Processing, L.P. [Member] |  |  |  |
Contract with Customer, Asset, after Allowance for Credit Loss |  | 17,700,000 |  | 18,000,000
Aid-in-construction [Member] | WTG Gas Processing, L.P. [Member] |  |  |  |
Contract with Customer, Asset, Asset Funding |  | 0 |  | 17,500,000
Contract with Customer, Asset, Payments Received |  | $ 375,000 |  | $ 2,000,000
[1] | Discounts as of March 31, 2025 and December 31, 2024 consisted of $30.0 million in discounts less accumulated amortization of $15.2 million and $12.8 million, respectively.

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