Balance Sheet (Tables)

6 Months Ended

Jul. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accounts and Contracts Receivables

	July 31, 2016			January 31, 2016
	(in thousands)
Accounts receivable	$	21,154		$	27,691
Contracts receivable		2,753			2,877
		23,907			30,568
Less long-term portion		(4,967	)		(4,972	)
Current accounts and contracts receivable		18,940			25,596
Less allowance for doubtful accounts		(5,828	)		(5,821	)
Current portion of accounts and contracts receivable, net of allowance for doubtful accounts	$	13,112		$	19,775

Schedule of Inventories

	July 31, 2016			January 31, 2016
	(in thousands)
Inventories:
Raw materials		7,620		$	7,314
Finished goods		5,004			4,967
Work in progress		1,405			1,563
		14,029			13,844
Less allowance for obsolescence		(938	)		(900	)
Total inventories, net	$	13,091		$	12,944

Schedule of Seismic Equipment Lease Pool and Property and Equipment

	July 31, 2016			January 31, 2016
	(in thousands)
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool	$	232,693		$	230,923
Land and buildings		3,379			3,375
Furniture and fixtures		9,625			9,405
Autos and trucks		683			694
		246,380			244,397
Accumulated depreciation and amortization		(185,415	)		(170,881	)
Total seismic equipment lease pool and property and equipment, net	$	60,965		$	73,516