Note 16 - Subsequent Events (Details Textual) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Aug. 01, 2025	Jul. 26, 2022	Jan. 05, 2022
Impairment, Oil and Gas, Property with Unproved and Proved Reserves		$ 2,760	$ 0	$ 2,760	$ 5,419
Credit Agreement [Member]
Debt Instrument, Face Amount		$ 20,000		$ 20,000			$ 20,000	$ 15,000
Credit Agreement [Member] \| Subsequent Event [Member]
Debt Instrument, Face Amount						$ 10,000
Minimum [Member] \| Forecast [Member]
Impairment, Oil and Gas, Property with Unproved and Proved Reserves	$ 500
Maximum [Member] \| Forecast [Member]
Impairment, Oil and Gas, Property with Unproved and Proved Reserves	$ 1,500