Revenue From Contracts With Customers - Deferred Revenue (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Revenue, Remaining Performance Obligation
Deferred revenue at December 31, 2019	$ 4,551
Cash collected in excess of revenue recognized	1,961
Recognition of deferred revenue	(4,356)
Deferred revenue at September 30, 2020	2,156
New Venture
Revenue, Remaining Performance Obligation
Deferred revenue at December 31, 2019	1,956
Deferred revenue at September 30, 2020	500
Imaging and Reservoir Services
Revenue, Remaining Performance Obligation
Deferred revenue at December 31, 2019	1,501
Deferred revenue at September 30, 2020	608
Optimization Software & Services
Revenue, Remaining Performance Obligation
Deferred revenue at December 31, 2019	642
Deferred revenue at September 30, 2020	1,000
Devices
Revenue, Remaining Performance Obligation
Deferred revenue at December 31, 2019	452
Deferred revenue at September 30, 2020	$ 48