Note 3 - Revenue From Contracts With Customers (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended March 31,
	2024		2023
	(in thousands)
Revenue:
Rockies
Oil	$	1,721	$	2,338
Natural gas and liquids		41		88
Total	$	1,762	$	2,426
West Texas, South Texas, and Gulf Coast
Oil	$	1,599	$	2,955
Natural gas and liquids		46		209
Total	$	1,645	$	3,164
Mid-Continent
Oil	$	1,407	$	1,802
Natural gas and liquids		577		880
Total	$	1,984	$	2,682
Combined Total	$	5,391	$	8,272

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Three Months Ended
	March 31,
	2024			2023
Purchaser A		28	%		11	%
Purchaser B		23	%		18	%
Purchaser C		11	%		0	%
Purchaser D		0	%		15	%
Purchaser E		0	%		13	%