XML 55 R45.htm IDEA: XBRL DOCUMENT v3.19.3
Summary of Significant Accounting Policies - Property, Plant, Equipment and Seismic Rental Equipment Useful Lives (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]      
Impairment charges recognized $ 36,553 $ 0 $ 0
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