Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual)		1 Months Ended		3 Months Ended		12 Months Ended
		Nov. 30, 2022 USD ($)	Feb. 28, 2022 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Nov. 14, 2022
Accounts Receivable, after Allowance for Credit Loss, Current, Total				$ 80,980,000		$ 96,596,000
Income Taxes Receivable				3,200,000		3,200,000
Oil and Gas Joint Interest Billing Receivables				2,000,000.0		2,200,000
Accounts Receivable, Allowance for Credit Loss, Current				0		0
Prepaid Expense				1,000,000.0		4,100,000
Inventory, Raw Materials and Supplies, Gross, Total				15,800,000		13,300,000
Inventory, LIFO Reserve				0		0
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance				745,000		696,000
Accounts Payable and Accrued Liabilities, Current, Total				561,400,000		266,100,000
Payments of Debt Issuance Costs				544,000	$ 6,449,000
Amortization of Debt Issuance Costs				2,668,000	645,000
Debt Instrument, Unamortized Discount, Total	[1]			22,796,000		$ 27,086,000
Amortization of Debt Discount (Premium)				$ 4,290,000	893,000
Number of Operating Segments				1
Minimum [Member]
Oil and Natural Gas Marketing Contracts, Term Over Which Consideration is Received from Purchaser (Month)				1 month
Maximum [Member]
Oil and Natural Gas Marketing Contracts, Term Over Which Consideration is Received from Purchaser (Month)				2 months
Senior Unsecured Notes and Revolving Credit Facility [Member]
Debt Issuance Costs, Gross				$ 20,200,000
Payments of Debt Issuance Costs				544,000
Amortization of Debt Issuance Costs				$ 2,700,000	645,000
Senior Unsecured Notes Due 2024 [Member]
Payments of Debt Issuance Costs			$ 22,100,000
Debt Instrument, Interest Rate, Stated Percentage			10.00%	10.00%
Debt Instrument, Unamortized Discount, Total				$ 34,800,000
Amortization of Debt Discount (Premium)				$ 4,300,000	$ 0
The 10.625% Senior Notes [Member]
Payments of Debt Issuance Costs		$ 26,300,000
Debt Instrument, Interest Rate, Stated Percentage				10.625%			10.625%
Transportation Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)				5 years
Building [Member]
Property, Plant and Equipment, Useful Life (Year)				40 years
Field Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)				7 years
Technology Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)				3 years
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Largest Purchaser [Member]
Concentration Risk, Percentage				95.00%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Purchaser 2 [Member]
Concentration Risk, Percentage						94.00%
Electric Power Infrastructure [Member]
Accounts Receivable, after Allowance for Credit Loss, Current, Total				$ 2,000,000.0		$ 4,900,000
Settlements of Derivative Contracts [Member]
Accounts Receivable, after Allowance for Credit Loss, Current, Total				1,200,000		4,700,000
Aid-in-construction Receivables [Member] | WTG Gas Processing, L.P. [Member]
Accounts Receivable, after Allowance for Credit Loss, Total				6,000,000.0		6,100,000
Crude Oil, Natural Gas and Natural Gas Liquids [Member]
Accounts Receivable, after Allowance for Credit Loss, Current, Total				$ 72,600,000		$ 81,600,000

[1] Discounts as of March 31, 2023 and December 31, 2022 consisted of $34.8 million and $34.8 million, respectively, in discounts less accumulated amortization of $12.0 million and $7.7 million, respectively.