Balance Sheet (Tables)

6 Months Ended

Jul. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accounts Receivable

	July 31, 2015			January 31, 2015
	(in thousands)
Accounts receivable:
Accounts receivable	$	25,029		$	30,032
Allowance for doubtful accounts		(6,936	)		(6,339	)
Total accounts receivable, net	$	18,093		$	23,693

Schedule of Inventories

	July 31, 2015			January 31, 2015
	(in thousands)
Inventories:
Raw materials	$	6,348		$	6,718
Finished goods		8,217			4,466
Work in progress		765			1,017
		15,330			12,201
Less allowance for obsolescence		(853	)		(750	)
Total inventories, net	$	14,477		$	11,451

Schedule of Seismic Equipment Lease Pool and Property and Equipment

	July 31, 2015			January 31, 2014
	(in thousands)
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool	$	243,744		$	243,211
Land and buildings		366			366
Furniture and fixtures		9,460			9,399
Autos and trucks		709			722
		254,279			253,698
Accumulated depreciation and amortization		(167,737	)		(153,611	)
Total seismic equipment lease pool and property and equipment, net	$	86,542		$	100,087