Details of Selected Balance Sheet Accounts (Tables)

3 Months Ended

Mar. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of inventories

A summary of inventories follows (in thousands):	March 31, 2020			December 31, 2019
Raw materials and subassemblies	$	18,181		$	18,509
Work-in-process	2,340			2,079
Finished goods	5,518			4,932
Less: reserve for excess and obsolete inventories	(13,219		)	(13,333		)
Inventories, net	$	12,820		$	12,187

Summary of property, plant, equipment and seismic rental equipment

A summary of property, plant and equipment follows (in thousands):	March 31, 2020			December 31, 2019
Buildings	$	15,665		$	15,486
Machinery and equipment	133,722			133,048
Seismic rental equipment	1,668			1,669
Furniture and fixtures	3,158			3,347
Other	29,955			31,142
Total	184,168			184,692
Less: accumulated depreciation	(134,909		)	(134,951		)
Less: impairment of long-lived assets	(36,553		)	(36,553		)
Property, plant and equipment, net	$	12,706		$	13,188

Schedule of multi-client data library

The change in multi-client data library are as follows (in thousands):	March 31, 2020			December 31, 2019
Gross costs of multi-client data creation	$	1,010,909		$	1,007,762
Less: accumulated amortization	(824,421		)	(816,401		)
Less: impairments to multi-client data library	(132,144		)	(130,977		)
Multi-client data library, net	$	54,344		$	60,384

Schedule of Goodwill

	E&P Technology & Services		Optimization Software & Services			Total
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	—		(1,137		)	(1,137		)
Balance at March 31, 2020	$	2,943	$	15,355		$	18,298