Industry Segments - Revenue, Income from Operations, and Assets by Reporting Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Industry Segments Details [Line Items]
Revenues from external customers	$ 102,326	$ 96,070	$ 179,650	$ 228,773
Loss before taxes and discontinued operations	(5,270)	(12,125)	(17,045)	(8,411)
Completion Fluids & Products Division
Industry Segments Details [Line Items]
Revenues from external customers	64,607	71,346	111,128	146,583
Loss before taxes and discontinued operations	16,427	13,202	25,438	32,598
Water & Flowback Services Division
Industry Segments Details [Line Items]
Revenues from external customers	37,719	24,724	68,522	82,190
Loss before taxes and discontinued operations	(4,978)	(8,418)	(10,458)	(10,662)
Interdivision eliminations
Industry Segments Details [Line Items]
Loss before taxes and discontinued operations	3	2	6	7
Corporate Overhead
Industry Segments Details [Line Items]
Loss before taxes and discontinued operations	(16,722)	(16,911)	(32,031)	(30,354)
Product sales
Industry Segments Details [Line Items]
Revenues from external customers	62,583	67,251	107,615	137,466
Product sales | Completion Fluids & Products Division
Industry Segments Details [Line Items]
Revenues from external customers	62,565	67,243	107,583	137,433
Product sales | Water & Flowback Services Division
Industry Segments Details [Line Items]
Revenues from external customers	18	8	32	33
Services
Industry Segments Details [Line Items]
Revenues from external customers	39,743	28,819	72,035	91,307
Services | Completion Fluids & Products Division
Industry Segments Details [Line Items]
Revenues from external customers	2,042	4,103	3,545	9,150
Services | Water & Flowback Services Division
Industry Segments Details [Line Items]
Revenues from external customers	$ 37,701	$ 24,716	$ 68,490	$ 82,157