Segment Reporting (Details) $ in Thousands		3 Months Ended
		Mar. 31, 2021 USD ($) segment	Mar. 31, 2020 USD ($) segment	Dec. 31, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment		2	2
Revenue		$ 108,383	$ 152,400
Segment operating income (loss)		11,622	(108,973)
Total assets (at end of period)		584,446	646,609	$ 568,579
Capital expenditures		2,772	3,340
Depreciation and amortization		4,871	5,441
Reservoir Description [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue		76,486	102,702
Segment operating income (loss)		10,051	11,062
Total assets (at end of period)		332,429	337,406
Capital expenditures		2,400	1,412
Depreciation and amortization		3,126	3,521
Reservoir Description [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue		57	100
Production Enhancement [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue		31,897	49,698
Segment operating income (loss)		1,560	(121,299)
Total assets (at end of period)		131,096	159,608
Capital expenditures		304	1,914
Depreciation and amortization		1,447	1,642
Production Enhancement [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue		36	316
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Segment operating income (loss)	[1]	11	1,264
Total assets (at end of period)	[1]	120,921	149,595
Capital expenditures	[1]	68	14
Depreciation and amortization	[1]	298	278
Corporate and Other [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	[1]	$ (93)	$ (416)

[1] Corporate & Other" represents those items that are not directly related to a particular segment and eliminations.