Balance Sheet (Tables)

6 Months Ended

Jul. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accounts and Contracts Receivables

	July 31, 2017			January 31, 2017
	(in thousands)
Accounts receivable	$	16,250		$	21,762
Contracts receivable		5,823			2,752
		22,073			24,514
Less long-term portion		(6,215	)		(4,968	)
Current accounts and contracts receivable		15,858			19,546
Less current portion of allowance for doubtful accounts		(3,419	)		(3,716	)
Current portion of accounts and contracts receivable, net of allowance for doubtful accounts	$	12,439		$	15,830

Schedule of Inventories

	July 31, 2017			January 31, 2017
	(in thousands)
Inventories:
Raw materials		5,446		$	5,781
Finished goods		5,879			5,985
Work in progress		2,005			1,146
		13,330			12,912
Less allowance for obsolescence		(865	)		(952	)
Total inventories, net	$	12,465		$	11,960

Schedule of Seismic Equipment Lease Pool and Property and Equipment

	July 31, 2017			January 31, 2017
	(in thousands)
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool	$	186,784		$	219,001
Land and buildings		3,381			3,379
Furniture and fixtures		9,796			9,462
Autos and trucks		712			675
		200,673			232,517
Accumulated depreciation and amortization		(170,831	)		(188,679	)
Total seismic equipment lease pool and property and equipment, net	$	29,842		$	43,838