Acquisitions (Details) - USD ($) $ in Thousands					12 Months Ended
	Jul. 27, 2016	Jan. 27, 2015	Apr. 01, 2014	Jan. 01, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Payments for acquisition, net of cash acquired					$ 7,863	$ 0	$ 5,704
International Polymerics, Inc
Business Acquisition [Line Items]
Percent of membership interests acquired	100.00%
Payments for acquisition, net of cash acquired	$ 7,900
Common stock, shares issued (in shares)	247,764
Artificial Lift
Business Acquisition [Line Items]
Common stock, shares issued (in shares)		60,024
Percent of assets acquired		100.00%
Consideration transferred, cash payments		$ 1,300
SiteLark
Business Acquisition [Line Items]
Percent of membership interests acquired			100.00%
Common stock, shares issued (in shares)			5,327
Consideration transferred, cash payments			$ 400
EOGA
Business Acquisition [Line Items]
Percent of membership interests acquired				100.00%
Payments for acquisition, net of cash acquired				$ 5,300
Common stock, shares issued (in shares)				94,354