Balance Sheet (Tables)

9 Months Ended

Oct. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accounts and Contracts Receivables

	October 31, 2016			January 31, 2016
	(in thousands)
Accounts receivable	$	18,700		$	27,691
Contracts receivable		2,752			2,877
		21,452			30,568
Less long-term portion		(4,968	)		(4,972	)
Current accounts and contracts receivable		16,484			25,596
Less allowance for doubtful accounts		(5,192	)		(5,821	)
Current portion of accounts and contracts receivable, net of allowance for doubtful accounts	$	11,292		$	19,775

Schedule of Inventories

	October 31, 2016			January 31, 2016
	(in thousands)
Inventories:
Raw materials	$	5,880		$	7,314
Finished goods		6,126			4,967
Work in progress		1,426			1,563
		13,432			13,844
Less allowance for obsolescence		(911	)		(900	)
Total inventories, net	$	12,521		$	12,944

Schedule of Seismic Equipment Lease Pool and Property and Equipment

	October 31, 2016			January 31, 2016
	(in thousands)
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool	$	230,763		$	230,923
Land and buildings		3,379			3,375
Furniture and fixtures		9,412			9,405
Autos and trucks		675			694
		244,229			244,397
Accumulated depreciation and amortization		(190,037	)		(170,881	)
Total seismic equipment lease pool and property and equipment, net	$	54,192		$	73,516