Details of Selected Balance Sheet Accounts (Tables)

9 Months Ended

Sep. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of inventories

A summary of inventories follows (in thousands):	September 30, 2020		December 31, 2019
Raw materials and subassemblies	$	18,622	$	18,509
Work-in-process	1,372		2,079
Finished goods	4,652		4,932
Less: reserve for excess and obsolete inventories	(12,773)		(13,333)
Inventories, net	$	11,873	$	12,187

Summary of property, plant, equipment and seismic rental equipment

A summary of property, plant and equipment follows (in thousands):	September 30, 2020		December 31, 2019
Buildings	$	15,739	$	15,486
Machinery and equipment	133,900		133,048
Seismic rental equipment	1,851		1,669
Furniture and fixtures	3,164		3,347
Other (a)	30,269		31,142
Total	184,923		184,692
Less: accumulated depreciation	(137,143)		(134,951)
Less: impairment of long-lived assets	(36,553)		(36,553)
Property, plant and equipment, net	$	11,227	$	13,188

(a) Consists primarily of cable-based ocean bottom acquisition technologies that were fully impaired.

Schedule of multi-client data library

The change in multi-client data library are as follows (in thousands):	September 30, 2020		December 31, 2019
Gross costs of multi-client data creation	$	1,018,509	$	1,007,762
Less: accumulated amortization	(833,075)		(816,401)
Less: impairments to multi-client data library	(132,145)		(130,977)
Multi-client data library, net	$	53,289	$	60,384

Schedule of goodwill

Goodwill	E&P Technology & Services		Optimization Software & Services		Total
			(In thousands)
Balance at January 1, 2019	$	2,943	$	19,972	$	22,915
Impact of foreign currency translation adjustments	—		670		670
Balance at December 31, 2019	2,943		20,642		23,585
Impairment of goodwill	—		(4,150)		(4,150)
Impact of foreign currency translation adjustments	—		(751)		(751)
Balance at September 30, 2020	$	2,943	$	15,741	$	18,684