Summary of Significant Accounting Policies - Property, Plant, Equipment and Seismic Rental Equipment Useful Lives (Details)	12 Months Ended
	Dec. 31, 2017
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant, equipment and seismic rental equipment useful life	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant, equipment and seismic rental equipment useful life	7 years
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Property, plant, equipment and seismic rental equipment useful life	5 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Property, plant, equipment and seismic rental equipment useful life	25 years
Seismic rental equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant, equipment and seismic rental equipment useful life	3 years
Seismic rental equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant, equipment and seismic rental equipment useful life	5 years
Leased equipment and other | Minimum
Property, Plant and Equipment [Line Items]
Property, plant, equipment and seismic rental equipment useful life	3 years
Leased equipment and other | Maximum
Property, Plant and Equipment [Line Items]
Property, plant, equipment and seismic rental equipment useful life	10 years