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Note 3 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenue	$ 2,193	$ 5,391
Oil Sales[Member]
Revenue	1,770	4,727
Natural Gas, Midstream [Member]
Revenue	423	664
Rockies [Member]
Revenue	1,426	1,762
Rockies [Member] | Oil Sales[Member]
Revenue	1,357	1,721
Rockies [Member] | Natural Gas, Midstream [Member]
Revenue	69	41
West Texas, South Texas, and Gulf Coast [Member]
Revenue	243	1,645
West Texas, South Texas, and Gulf Coast [Member] | Oil Sales[Member]
Revenue	233	1,599
West Texas, South Texas, and Gulf Coast [Member] | Natural Gas, Midstream [Member]
Revenue	10	46
Mid-Continent [Member]
Revenue	524	1,984
Mid-Continent [Member] | Oil Sales[Member]
Revenue	180	1,407
Mid-Continent [Member] | Natural Gas, Midstream [Member]
Revenue	$ 344	$ 577

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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