Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Goodwill, beginning balance		$ 42,332	$ 43,832
Acquisition			9,258
Impairment	$ (11,400)		(11,422)
Effects of foreign currency		112	664
Goodwill, ending balance	42,332	42,444	42,332	$ 43,832
Fluids Systems
Goodwill [Roll Forward]
Goodwill, beginning balance		0	1,641
Acquisition			9,258
Impairment		0	(11,422)	0
Effects of foreign currency		0	523
Goodwill, ending balance	0	0	0	1,641
Industrial solutions
Goodwill [Roll Forward]
Goodwill, beginning balance		42,332	42,191
Acquisition			0
Impairment			0
Effects of foreign currency		112	141
Goodwill, ending balance	$ 42,332	$ 42,444	$ 42,332	$ 42,191