Note 10 - Segment Reporting - Revenues by Geography (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue		$ 3,109	$ 3,027	$ 15,142	$ 11,257
Production Services [Member]
Revenue		2,788	2,483	8,645	6,556
Completion Services [Member]
Revenue		321	544	6,497	4,701
Rocky Mountain Region [Member] | Production Services [Member]
Revenue	[1]	325	676	1,494	1,708
Rocky Mountain Region [Member] | Completion Services [Member]
Revenue	[1]	52	435	4,932	3,142
Central USA Region [Member] | Production Services [Member]
Revenue	[2]	2,249	1,651	6,587	4,304
Central USA Region [Member] | Completion Services [Member]
Revenue	[2]	233	38	481	38
Eastern USA Region [Member] | Production Services [Member]
Revenue	[3]	214	156	564	544
Eastern USA Region [Member] | Completion Services [Member]
Revenue	[3]	$ 36	$ 71	$ 1,084	$ 1,521

[1] Includes the DJ Basin/Niobrara field (northeastern Colorado and southeastern Wyoming), the San Juan Basin (southeastern Colorado and northeastern New Mexico), the Powder River and Green River Basins (northeastern and southwestern Wyoming), the Bakken area (western North Dakota and eastern Montana).

[2] Includes the Eagle Ford Shale in Southern Texas and the East Texas Oil Field beginning during the second quarter of 2021.

[3] Consists of the southern region of the Marcellus Shale formation (southwestern Pennsylvania and northern West Virginia) and the Utica Shale formation (eastern Ohio).