Seismic Equipment Lease Pool and Property and Equipment

12 Months Ended

Jan. 31, 2013

Seismic Equipment Lease Pool and Property and Equipment [Abstract]

Seismic Equipment Lease Pool and Property and Equipment

7. Seismic Equipment Lease Pool and Property and Equipment

Seismic equipment lease pool and property and equipment consisted of the following (in thousands):

	As of January 31,
	2013			2012
Recording channels	$	126,600		$	110,730
Other peripheral equipment		114,795			112,763
Cost of seismic equipment lease pool		241,395			223,493
Land and buildings		366			366
Furniture and fixtures		8,899			8,020
Autos and trucks		748			680
Cost of property and equipment		10,013			9,066
Cost of seismic equipment lease pool and property and equipment		251,408			232,559
Less accumulated depreciation		(131,800	)		(112,182	)
Net book value of seismic equipment lease pool and property and equipment	$	119,608		$	120,377
	As of January 31,
	2013			2012
Location of seismic equipment lease pool and property and equipment (in thousands):
United States	$	40,908		$	65,922
Canada		22,639			23,856
Latin America		23,109			21,963
Australia		7,973			2,553
Russia		3,708			2,323
Singapore		9,433			3,352
United Kingdom		329			232
Europe		11,509			176
Net book value of seismic equipment lease pool and property and equipment	$	119,608		$	120,377