Balance Sheet (Tables)

6 Months Ended

Jul. 31, 2014

Text Block [Abstract]

Accounts Receivable

	July 31, 2014			January 31, 2014
	(in thousands)
Accounts receivable:
Accounts receivable	$	33,342		$	33,347
Allowance for doubtful accounts		(3,825	)		(3,833	)
Total accounts receivable, net		29,517		$	29,514

Schedule of Inventories

	July 31, 2014			January 31, 2014
	(in thousands)
Inventories:
Raw materials	$	6,371		$	4,599
Finished goods		5,376			4,159
Work in progress		1,092			612
		12,839			9,370
Less allowance for obsolescence		(1,111	)		(1,032	)
Total inventories, net	$	11,728		$	8,338

Schedule of Seismic Equipment Lease Pool and Property and Equipment

	July 31, 2014			January 31, 2014
	(in thousands)
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool	$	264,354		$	261,644
Land and buildings		366			366
Furniture and fixtures		9,869			8,904
Autos and trucks		791			770
		275,380			271,684
Accumulated depreciation and amortization		(153,278	)		(142,111	)
Total seismic equipment lease pool and property and equipment, net	$	122,102		$	129,573