Note 10 - Segment Reporting - Revenues by Geography (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Revenue		$ 15,337	$ 15,683
Production Services [Member]
Revenue		9,012	7,714
Completion Services [Member]
Revenue		6,325	7,969
Rocky Mountain Region [Member] | Production Services [Member]
Revenue	[1]	2,213	2,689
Rocky Mountain Region [Member] | Completion Services [Member]
Revenue	[1]	4,521	6,601
Central USA Region [Member] | Production Services [Member]
Revenue	[2]	6,158	4,552
Central USA Region [Member] | Completion Services [Member]
Revenue	[2]	128	108
Eastern USA Region [Member] | Production Services [Member]
Revenue	[3]	641	473
Eastern USA Region [Member] | Completion Services [Member]
Revenue	[3]	$ 1,676	$ 1,260

[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).