Balance Sheet (Tables)

9 Months Ended

Oct. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accounts and Contracts Receivables

	October 31, 2017			January 31, 2017
	(in thousands)
Accounts receivable	$	16,015		$	21,762
Contracts receivable	5,374			2,752
	21,389			24,514
Less long-term portion	(6,259		)	(4,968		)
Current accounts and contracts receivable	15,130			19,546
Less current portion of allowance for doubtful accounts	(2,965		)	(3,716		)
Current portion of accounts and contracts receivable, net of allowance for doubtful accounts	$	12,165		$	15,830

Schedule of Inventories

	October 31, 2017			January 31, 2017
	(in thousands)
Inventories:
Raw materials	$	5,157		$	5,781
Finished goods	5,642			5,985
Work in progress	2,003			1,146
	12,802			12,912
Less allowance for obsolescence	(862		)	(952		)
Total inventories, net	$	11,940		$	11,960

Schedule of Seismic Equipment Lease Pool and Property and Equipment

	October 31, 2017			January 31, 2017
	(in thousands)
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool	$	185,304		$	219,001
Land and buildings	3,380			3,379
Furniture and fixtures	9,904			9,462
Autos and trucks	701			675
	199,289			232,517
Accumulated depreciation and amortization	(172,917		)	(188,679		)
Total seismic equipment lease pool and property and equipment, net	$	26,372		$	43,838