Segment Reporting And Other Disaggregated Information (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2021 USD ($) Segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment		2
Revenue		$ 470,252	$ 487,267	$ 668,210
Segment operating income (loss)		45,262	(76,805)	96,684
Total assets (at end of period)		580,853	568,579	774,673
Capital expenditures		13,539	11,880	22,269
Depreciation and amortization		18,516	20,867	22,605
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue		0
Reservoir Description [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue		313,609	355,041	420,897
Segment operating income (loss)		28,958	55,044	55,140
Total assets (at end of period)		305,256	327,386	343,405
Capital expenditures		9,572	6,135	10,439
Depreciation and amortization		11,789	13,612	15,109
Reservoir Description [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue		346	313	436
Production Enhancement [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue		156,643	132,226	247,313
Segment operating income (loss)		15,163	(133,449)	38,378
Total assets (at end of period)		142,310	129,568	279,769
Capital expenditures		2,281	5,460	11,253
Depreciation and amortization		5,728	6,203	5,645
Production Enhancement [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue		299	521	500
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Segment operating income (loss)	[1]	1,141	1,600	3,166
Total assets (at end of period)	[1]	133,287	111,625	151,499
Capital expenditures	[1]	1,686	285	577
Depreciation and amortization	[1]	999	1,052	1,851
Corporate and Other [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	[1]	$ (645)	$ (834)	$ (936)

[1] "Corporate and other" represents those items not directly related to a particular segment and eliminations.