Note 13 - Segment Reporting - Revenues by Geography (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Revenue		$ 43,026	$ 42,760
Production Services [Member]
Revenue		14,704	14,538
Completion Services [Member]
Revenue		28,322	28,222
Rocky Mountain Region [Member] | Production Services [Member]
Revenue	[1]	6,515	6,205
Rocky Mountain Region [Member] | Completion Services [Member]
Revenue	[1]	21,535	21,393
Central USA Region [Member] | Production Services [Member]
Revenue	[2]	7,449	7,560
Central USA Region [Member] | Completion Services [Member]
Revenue	[2]	3,223	3,390
Eastern USA Region [Member] | Production Services [Member]
Revenue	[3]	740	773
Eastern USA Region [Member] | Completion Services [Member]
Revenue	[3]	$ 3,564	$ 3,439

[1] Includes the D-J 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 Scoop/Stack Shale in Oklahoma and the Eagle Ford Shale - in Texas.

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