Industry Segments - Revenue, Income from Operations, and Assets by Reporting Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Industry Segments Details [Line Items]
Revenues from external customers	$ 95,474	$ 73,484	$ 275,124	$ 302,257
Income (loss) before taxes and discontinued operations	3,082	(9,458)	(13,963)	(17,869)
Completion Fluids & Products Division
Industry Segments Details [Line Items]
Revenues from external customers	48,691	51,950	159,819	198,533
Income (loss) before taxes and discontinued operations	14,675	11,756	40,113	44,354
Water & Flowback Services Division
Industry Segments Details [Line Items]
Revenues from external customers	46,783	21,534	115,305	103,724
Income (loss) before taxes and discontinued operations	(1,807)	(7,746)	(12,265)	(18,408)
Interdivision eliminations
Industry Segments Details [Line Items]
Income (loss) before taxes and discontinued operations	3	4	9	10
Corporate Overhead
Industry Segments Details [Line Items]
Income (loss) before taxes and discontinued operations	(9,789)	(13,472)	(41,820)	(43,825)
Product sales
Industry Segments Details [Line Items]
Revenues from external customers	46,340	50,009	153,955	187,475
Product sales | Completion Fluids & Products Division
Industry Segments Details [Line Items]
Revenues from external customers	46,322	49,986	153,905	187,419
Product sales | Water & Flowback Services Division
Industry Segments Details [Line Items]
Revenues from external customers	18	23	50	56
Services
Industry Segments Details [Line Items]
Revenues from external customers	49,134	23,475	121,169	114,782
Services | Completion Fluids & Products Division
Industry Segments Details [Line Items]
Revenues from external customers	2,369	1,964	5,914	11,114
Services | Water & Flowback Services Division
Industry Segments Details [Line Items]
Revenues from external customers	$ 46,765	$ 21,511	$ 115,255	$ 103,668