Industry Segments - Revenue, Income from Operations, and Assets by Reporting Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Industry Segments Details [Line Items]
Revenues	$ 77,324	$ 132,704
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(11,775)	3,713
Completion Fluids & Products Division [Member]
Industry Segments Details [Line Items]
Revenues	46,522	75,237
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	9,010	19,396
Water & Flowback Services [Member]
Industry Segments Details [Line Items]
Revenues	30,802	57,467
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(5,480)	(2,244)
Interdivision Eliminations [Member]
Industry Segments Details [Line Items]
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	3	5
Corporate Overhead [Member]
Industry Segments Details [Line Items]
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(15,308)	(13,444)
Product sales
Industry Segments Details [Line Items]
Revenues	45,032	70,215
Product sales | Completion Fluids & Products Division [Member]
Industry Segments Details [Line Items]
Revenues	45,019	70,190
Product sales | Water & Flowback Services [Member]
Industry Segments Details [Line Items]
Revenues	13	25
Services
Industry Segments Details [Line Items]
Revenues	32,292	62,489
Services | Completion Fluids & Products Division [Member]
Industry Segments Details [Line Items]
Revenues	1,503	5,047
Services | Water & Flowback Services [Member]
Industry Segments Details [Line Items]
Revenues	$ 30,789	$ 57,442