Supplemental Selected Quarterly Financial Data (Unaudited) (Details Textual) - USD ($) $ in Thousands		3 Months Ended				12 Months Ended
	Nov. 01, 2015	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Tax Cuts and Jobs Act of 2017, net tax benefit recognized		$ (3,400)
Loss from disposal of discontinued operations, net of tax						$ (17,367)	$ 0	$ 0
Inventory write-downs							4,075	2,163
Asset impairment charges						$ 0	12,523	75,508
Impairment of property, plant and equipment							4,286	2,625
Fluids systems [Member]
Loss Contingencies [Line Items]
Inventory write-downs							2,600
Asset impairment charges	$ 4,100						2,200
Asia Pacific [Member]
Loss Contingencies [Line Items]
Asset impairment charges					$ 6,900
Impairment of property, plant and equipment					3,800
Asset write downs and litigation settlement					$ 3,100
Asia Pacific [Member] | Fluids systems [Member]
Loss Contingencies [Line Items]
Inventory write-downs			$ 2,600
Uruguay [Member] | Fluids systems [Member]
Loss Contingencies [Line Items]
Exit costs			$ 2,000	$ 2,500
Impairment of property, plant and equipment							500
Asset write downs and litigation settlement							$ 15,500	$ 75,500