Revenue From Contracts With Customers - Deferred Revenue (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Revenue, Remaining Performance Obligation [Roll Forward]
Deferred revenue at December 31, 2019	$ 4,551
Cash collected in excess of revenue recognized	1,613
Recognition of deferred revenue	(1,282)
Deferred revenue at March 31, 2020	4,882
New Venture
Revenue, Remaining Performance Obligation [Roll Forward]
Deferred revenue at December 31, 2019	1,956
Deferred revenue at March 31, 2020	2,456
Imaging and Reservoir Services
Revenue, Remaining Performance Obligation [Roll Forward]
Deferred revenue at December 31, 2019	1,501
Deferred revenue at March 31, 2020	1,141
Optimization Software & Services
Revenue, Remaining Performance Obligation [Roll Forward]
Deferred revenue at December 31, 2019	642
Deferred revenue at March 31, 2020	832
Devices
Revenue, Remaining Performance Obligation [Roll Forward]
Deferred revenue at December 31, 2019	452
Deferred revenue at March 31, 2020	$ 453