Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Total revenues	$ 11,916	$ 17,309	$ 22,295	$ 34,647
UNITED STATES
Total revenues	11,024	16,435	20,559	32,958
MEXICO
Total revenues	892	874	1,736	1,689
Natural Gas, Gathering, Transportation, Marketing and Processing [Member]
Total revenues	11,036	14,628	19,733	28,574
Rental [Member]
Total revenues	683	1,296	1,540	2,846
Service [Member]
Total revenues	9	1,169	832	2,874
Product and Service, Other [Member]
Total revenues	$ 188	$ 216	$ 190	$ 353

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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+ Details