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Note 9 - Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended				6 Months Ended
	Jan. 27, 2025	Jan. 23, 2025	Jan. 22, 2025	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024	Jan. 29, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)				0		0		0	0
Proceeds from Issuance of Common Stock								$ 11,877	$ 0
Stock Repurchased During Period, Shares (in shares)				72,000		145,000		197,000	464,000
Stock Repurchased During Period, Value				$ 83	$ 234	$ 168	$ 337	$ 316	$ 506
Share Repurchase Program, Weighted Average Price Per Share (in dollars per share)				$ 1.153		$ 1.158		$ 1.61	$ 1.1
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)								10 years
Share-Based Payment Arrangement, Expense								$ 700
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)				0		0		0	0
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount				$ 1,700				$ 1,700
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)								1 year 9 months 18 days
Stock Repurchase Program, Authorized Amount										$ 5,000
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Expense				$ 0		$ 0		$ 0	$ 0
Banner Oil & Gas, LLC [Member]
Stock Repurchased During Period, Shares (in shares)	534,020
Woodford Petroleum, LLC [Member]
Stock Repurchased During Period, Shares (in shares)	41,229
Sage Road Energy II, LP [Member]
Stock Repurchased During Period, Shares (in shares)	60,151
Related Party [Member]
Stock Repurchased During Period, Value	$ 1,574
Share Repurchase Program, Weighted Average Price Per Share (in dollars per share)	$ 2.48
Sage Road Capital, LLC [Member]
Payments to Acquire Investments		$ 1,574
Underwriting Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)		4,871,400	4,871,400
Shares Issued, Price Per Share (in dollars per share)			$ 2.65
Proceeds from Issuance of Common Stock		$ 11,900
Equity Offering, Commission, Percentage of Closing Sales Price	8.20%
Over-Allotment Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)		635,400